iii b.tech. — isemester

Code : 13CE3104

B.TECH. DEGREE EXAMINATION, NOVEMBER 2015III B.Tech. — I Semester

FOUNDATION ENGINEERING(Civil Engineering)

Time: 3 hours Max. Marks: 60

Answer FIVE Questions, Choosing ONE Question from each sectionAll Questions carry equal marks

* *

SECTION - I

1 (a) Describe the Swedish circle method of slope stability analysis for c-9 soil.(b) Ah embankment is constructed at an angle of 60° to the horizontal. The cohesive (6M)

strength of the embankment material is 40 kN/m2 and the angle of shearingresistance is zero. Its unit weight is 18 kN/m3. Calculate the safe height of theembankment for a factor of safety of 1.5. Assume the stability number as 0.91.

(a) Derive an expression for the factor of safety of infinite slope when there is steady (6M)seepage along the slope.

(b) A 6 m cut is to be made in cohesive soil with a slope of 1 : 1. The soil has c = 30 (6M)kN/m2; 9 = 10° and y = 18 kN/m3. Determine the factor of safety with respect tocohesion. What will be the critical height of the slope in this soil?

(6M)

2

SECTION - II

(a) Distinguish between Rankine’s theory and Coulomb’s theory of earth pressure.(b) A retaining wall with smooth vertical back is 8 m high and retains a two layer (7M)

sand backfill. The top layer is 3 m high having 9 = 30° and y = 20 kN/m3. Thebottom layer is 5 m high having 9 = 35° and y = 22 kN/m3. Determine the totalactive earth pressure and its point of application.

(5M)3

(a) What are the different types of retaining structures and explain its suitability.(b) A masonry retaining wall of trapezoidal section with the vertical face on the earth (7M)

side is 1.5 m wide at the top and 3.5 m wide at the base and is 6 m high. It retainsa horizontal sand backfill with unit weight 19 kN/m3 and 9 = 30°. Find themaximum and minimum pressure at the base of the retaining wall. Take unitweight of masonry as 22 kN/m3.

(5M)4

SECTION - III

(a) Explain the different types of settlement of foundation along with tolerable (6M)settlements.

(b) A strip footing 1.3 m wide is supported on a soil with its base at a depth of 1 m (6M)below the ground surface. The soil properties are c = 15 kN/m2; 9 = 25° and y =18 kN/m3 and ysat = 20 kN/m3. Determine the safe bearing capacity when thewater table is at the base of the footing. Take Terzaghi’s bearing capacity factorsfor 9 = 25° as Nc = 20, N7 = 5 and Nq = 10. Factor of safety is 2.5.

5

(a) Derive the equation for the determination of bearing capacity of soil using (7M)Terzaghi’s analysis.

(b) Determine the size of a square footing at the ground level to transmit a load of (5M)

6

and 7 = 18 kN/m3. The900 kN. The soil is dry sand having cp = 36°corresponding bearing capacity factors are NY = 46 and Nq = 43. Use a factor ofsafety of 3.

j y.

SECTION - IV

7 (a) Describe the pile load test to determine the capacity of a pile foundation.(b) A square pile group of 9 piles of 250 mm diameter is arranged with pile spacing (6M)

of 750 mm in a clayey soil. The length of pile is 9 m. Cohesion of the clay is 75kN/m2. Determine the group capacity. Assume adhesion factor 0.75i

(6M)

8 (a) What are different shapes of well foundation? Explain the methods to rectify tilts (7M)and shifts in the field during sinking.

(b) A concrete pile 9 m long was driven by a single acting steam hammer of 4000 kg (5M)and height of fall of 2 m. The total settlement recorded for the last 10 blows was25 mm. Calculate the allowable load on the pile using ENR formula.

SECTION - V

9 (a) State the objectives of soil exploration and explain the wash boring method of soil (6M)investigation with its merits and demerits.

(b) Explain the electrical resistivity method of soil investigation. (6M)

10 (a) What is a bore hole log and explain the salient features of soil investigation (6M)report.

(b) What do you understand by disturbed and undisturbed soil samples? Describe the (6M)features of a soil sampler that affect the sample disturbance with a sketch.

Code : I3CE3103B.TECH. DEGREE'EXAMINATION, NOVEMBER 2015

III B.Tech. I SemesterSTEEL STRUCTURAL DESIGN

(Civii Engineering)

Time: 3 hours Max. Marks: 60Answer FIVE-Questions, Choosing ONE Question from each sectionAll Questions carry equal marks* * *

SECTION - I

1 (a) Discuss the types of loads to be considered for design of structures. What is meant bya partial safety factor for load?(b) Write short notes on size of weld and throat thickness. What are different types ofwelded connections?

2 A double riveted lap joint is used to connect 12 mm thick plates, by providing 20 mmdiameter rivets at 60 mm pitch. Determine the strength of joint and its efficiency.Take shear stress in rivets as 80 N/mm2, bearing stress in rivets as 250 N/mm2 andaxial tension in plates as 0.6 fy, where fy = 250 Mpa.

SECTION - SI

Determine the allowable tensile load on an unequal angle ISA 100 x 75 x 6 mmwelded to 10 mm gussets at the ends through the 100 mm leg of angle. Hence designthe connecting welds (a) on the sides only (b) on the sides and end also.

3

Design a built-up column to carry an axial compressive load of 2500 kN. The lengthof column is 5.00 m. It is effectively held in position at both ends but restrainedagainst rotation at one end only. Take fy= 250 N/mm2.

4

SECTION - III

A S.S. beam of span 5m carries a uniformly distributed load of 25kN/m over thewhole length. Design the beam assuming that it is laterally supported. Take fy = 310N/mm2 and E = 2 x 105 N/mm2.

5

A simply supported beam having a span of 12.5m consisting of ISMB 500 @ 869N/m and cover plates of 250 mm x 12 mm connected to each flange by 20 mm diarivets. Determine the safe load the beam can carry assuming that the beam islaterally supported. Take fy = 250 N/mm2 and E= 2xl05 N/mm2.

6

SECTION - IV

A beam section consists of ISWB 500 @ 952 N/m is simply supported over a span of7 m. What is safe load that beam can carry, if the beam is laterally unsupported. Takefy = 250 N/mm2 and E = 2 x 10s N/mm2.

7

A simply supported beam carries u.d.l. of 75 kN/m excluding the self weight of thebeam over a clear span of 8 m. If the beam laterally unsupported, design the platedbeam using ISMB 500.

8

SECTION - V

A column consists of ISHB 400 @ 774 N/m carrying an axial load of 1800 kN.Design the gusseted base, if the column is supported on concrete pedestal with abearing capacity of 4 N/mm .

9

Design a two tier grillage foundation for a column transmitting an axial load of 2200kN. Safe Bearing Capacity of the soil is 150 KN/m2, base plate is of size 400mm x400mm.

10

Code : 13CE3101B.TECH. DEGREE EXAMINATION, NOVEMBER 2015

III B.Tech. I SemesterSTRUCTURAL ANALYSIS - 1

(Civil Engineering)Time: 3 hours Max. Marks: 60


* * *

SECTION-1

1. Determine the location and magnitude of maximum deflection and the support rotations ofa beam loaded as shown in Fig. 1 .

45 kN 60 kN

4«1 m 2 m x 20 kN/ m

^ mAAAAAAAAmiaiz\ 5 m// /// // / // /^/ / / /

Fig - 1

2. Using moment-area theorems, determine the deflection and slope at the point of action of25 kN load on a beam shown in Fig.2. Also find the maximum deflection and slope.

Adopt E = 200 kN/mm2 and I = 50 x 106 mm4. t10 kN25 kN

T211 m 2 m >4

Fig.2

SECTION-II

3. Using method of sections, find the forces in all members of the truss supported and loadedas shown in Fig.3. The truss consists of equilateral triangles of side equal to 3 m.

50 kN 30 kN

20 kN *

77777777 ////////40 kNFig.3

4. Using the tension coefficients method, find the forces in all members of the truss supportedand loaded as shown in Fig.4.50 kN

*530 kN

60° 60°nnr// / / /,V740 kN

2 @ 2 m = 4 m<

Fig.4

SECTION-III

5. Draw the shear force and bending moment diagrams for a beam of span 3 m supported andloaded as shown in Fig.5.50 kN

1 m25 kN/ m < >z(THi

// // / / / /

Fig-5

6. Draw the shear force and bending moment diagrams of the beam of span 5 m supportedand loaded as shown in Fig.6.

50 kN

25 kN/ m

2 m >Fig.6

SECTION-IV

7. Draw the shear force and bending moment diagrams of a continuous beam loaded asshown in Fig.7.

250 kN

11.5 m 50 kN50 kN/ in

2EIEl El3 m 1 m4 m >Fig - 7

8. Analyse the continuous beam shown in Fig.8. Also draw the shear force and bendingmoment diagrams. Assume the flexural rigidity is constant.

150 kN 50 kN

1 m1 m A >50 kN/ mx A A .x\\ Zrmi4 m 5 m/////£//A >

Fig-8SECTION-V

9. (a) Derive the expression for strain energy stored in a member due to axial load.(b) Using unit load method, find the mid-span deflection of a beam supported and loaded

as shown in Fig.9.

50 kN25 kN1 m

2 mA >A >zZV(mi// // / / / / 5 m V7<

Fig.9

10. Determine the vertical deflection at the free end of a plane steel truss supported and.loaded shown in Fig.10. Assume the cross-sectional area of each member is 600 mm".

r~

20 kN 10 kN

4?. m2 mxx/ \ XXXXXXXXXX4 m X

XXXXXXXXXXXXV XXXX Fig. 10

Code :13CE3iQ2

B.TECH. DEGREE EXAMINATION, NOVEMBER 2015

a a

R.C.C. STRUCTURAL DESIGN - I(Civil Engineering)



* ic *

SECTION -1

1. (a) Define the term ‘Partial safety factors’ as used in limit state design, identify the variousfactors and state the values recommended in IS 456-2000.

(b) Compare ‘working stress method’ and limit state design of RCC structures. Explain theanswer with suitable examples.

2. Design a rectangular beam for an effective span of 6.5 m, the superimposed load is 75kN/mand size of the beam is limited to 300mm x 700mm. Use M25 grade concrete and Fe4 i 5 gradesteel.

SECTION - II

3. An RC beam has an effective depth of 450mm and breadth of 300mm. It contains4-25mmbars. If

(a) aci< = 25 N/mnf and asv = 250 N/mm2 and(b) aCk = 15 N/mm2 and osv = 415 N/mm2

Calculate the shear reinforcement needed for a factored shear force of 360Kn.

4. Design a continuous R.C. Slab for a class room 7.5m wide and 14.5m long. The roof is to besupported on R.C.C Beams spaced at 4.0 m intervals. The width of beam should be kept260 mm. The superimposed load is 6.5 kN/m2 and finishing load expected is 1.95 kN/m 2

.

Use M2o concrete and Fe 415 steel.SECTION - III

5. Design the reinforcement in a column of size 450mmx550mm, subject to an axial load of2650KN under service dead and live loads. The column has an unsupported length of 3.5mand is braced against sideway in both directions.Use M20 concrete and Fe 415 steel.

6. Design an axially load tied column450mmx450inmpinned at both ends with an unsupportedlength of 3m for carrying a factored load of 2400 KN. Use M2o grade of concrete andFe 4 isSteel.

SECTION- IV

7. Design a square footing for an axially loaded column of size 430mm x 430mmcarrying1200 kN load. Use M2oconcrete and Fe 415 steel. Safe bearing capacity of soil is 230kN/m2.

Draw the necessary reinforcement details.

8. Design a rectangular footing for a R.C. column 350mrn x450mmcarrying an axial load of1700KN.The safe bearing capacity of soil is 21OkN/nr. Adopt M20 grade concrete and Fe 4 , 5 steel.

SECTION- V

9. Design a dog-legged stair case (waist slab type) for an office building assuming a floor-to-floor height of 3.0 m, a flight width of 1.2m, and a loading width of 1.25 m. Assume the stairs 'to be supported on 230mm thick masonry walls at the edges of the loading, parallel to therisers. Use M2o concrete and Fe4 I 5 steel. Assume live loads of 4.0kN.m 2 and mild exposureconditions.

10. A rectangular simply supported beam of clear span 4.5m is 320mmx520mm in cross section.It is reinforced with 4 bars of 25mm diameter. Use M20 grade concrete and Fe4|5 steel. Theeffective cover is 40mm. Taking super imposed live load as 25 KN/m and dead load asz20KN/m, calculate the short term and long term deflections of the beam.

Code: 13CE3106B.TECH. DEGREE EXAMINATION, NOVEMBER, 2015

IIIB.Tech. I SemesterADVANCED HYDRAULICS

(Civil Engineering)Time: 3 hours Max. Marks: 60

Answer FIVE Questions, Choosing ONE Question from, each sectionAll Questions carry equal marks

is ie is

SECTION -1

1. (a)Differentiate open channel flow and pipe flow with the help of neat sketches'' , ,

(b) Explain geometric and flow parameters of open channel flow(

OR2. The width of a horizontal rectangular channel is reduced from 4.5m to 3.5m and the floor is raised

by0.25m in elevation at a given section. At the upstream section, the depth of flow is 2.0m and thekinetic energy correction factor a is 1.15. If the drop in the water surface elevation at the contraction is0.20m, calculate the discharge if (a) the energy loss is neglected and (b) the energy loss in one-tenth ofthe upstream velocity head (Assume kinetic energy correction factor at the contracted section as unity).

SECTIONrII3. (a) Explain the characteristics of uniform flow,

(b) How uniform flow is established.OR

4. A slightly rough brick-lined trapezoidal channel carrying a discharge of 30.0m is to have alongitudinal slope of 0.0004. Analyse the proportions of (a) an efficient trapezoidal channel sectionhaving a side of 1.5 horizontal: 1 vertical, (b) the most efficient-channel section of trapezoidal shape.

SECTION - m5. (a) Explain specific energy and discharge diagrams.;

(b) If Yi and Y2 are the alternate depths in a triangular channel, show thatYC5=4Y,4Y24 / (Y,3+Y23+Y, Y22+Y,2Y2)

OR6.Calculate critical depth y0and corresponding specific energy Ec for the following different shapes of

channel when Q=T0.5 m /s.(i) Rectangular channel B= 2.5m.(ii) Triangular channel with side slope = 0.5 H:1V, i.e., z=0.5(iii)Trapezoidal channel with B=2.5, side slope 1.5H:1V, z=1.5.

SECTION-IV7. (a) What are the assumptions made for theory of gradually varied flow.

(b) Mention the classification of channel bed slopes and explain them.OR

8.A rectangular channel 8m wide carries discharge of 12 m3/sec (Manning’s n=O.025, bed slope of0.0016). Compute the length of back water profile created by a dam which backs up a depth 2mimmediately behind the dam by direct step method. Take at least 3 steps to compute the profile.

SECTION - V9. (a) Write the characteristics of rapidly varied flow.

(b)Explain in detail the sluice gate flow with a help of neat sketch?OR

10. Water flows in a rectangular channel of 4.0 m wide with depth 2.0 m and velocity 1.5 m/sec. Find (i)the height of the hump so that flow above it is critical and (ii) depth over the hump when height ofhump is 1/3 of value ( obtained in first calculation [i.e.(i)].

**************

Code : 13EE3107


III B.Tech. I SemesterELECTRICAL MEASUREMENTS

(Electrical & Electronics Engineering)

lime : 3 hours Max. Marks :60

Answer FIVE Questions, Choosing ONE Question from each sectionAll Questions cany equal marks

* * *

SECTION - I

Write about the static characteristics of the instruments and what is the significanceof these characteristics.What are the different types of Errors that occur in measurement process explain indetail.Discuss about the forces that occur in electro mechanical measurement system .What is the importance of the shunts in the measuring instruments? A MC typeammeter has a fixed shunt of 0.01 ohms. With a coil resistance of 750 ohms and avoltage drop of 400mV across it, the FSD is obtained

a) Calculate the current through shunt.b) Calculate the resistance of meter to give FSD if the shunted current is

50Amps.

1 a)

b)

2 a)b)

SECTION - II

Derive the torque equation and Explain the theory of Electrodynamometer typewattmeter with a neat sketch

3 a)

A certain circuit takes I 0A at 200 volts and the power absorbed is 1000W. if thecurrent coil has a resistance of 0.15 ohms and the pressure coil resistance is 5000ohms and inductance of 0.3H, find

i) The error due to resistance for each of the two possible methods ofconnections.

ii ) The Error due to the inductance, if the frequency of 50Hz.

b)

A 220 V, 5A energy meter is tested at its marked ratings. The resistance of thepressure coil is 8800 ohms and that of current coil is 0.1 ohms. Calculate the powerconsumed when testing the meter with phantom loading with current circuit excitedby a 6V battery.Explain the construction and working of a two element energy meter.

4 a)

b)

SECTION - III

A single phase PT has a turns ratio of 3810/63. The nominal secondary voltage is63V and the total equivalent resistance and leakage reactance referred to thesecondary side are 2 ohms and 1 ohms respectively. Calculate the ratio and phaseangle errors when the transformer is supplying a burden of 100+j200 ohms.Derive expressions for the Phase angle errors of a potential Transformer with a neatphasor diagram

5 a)

b)

Explain the operation of MI type single phase synchroscopeExplain the operation of Weston type frequency meter.

6 a)b)

SECTION - IV

Explain about the process of measurement of resistance using Crompton DCpotentiometerA basic slide wire potentiometer has a working battery voltage of 3 volts withnegligible internal resistance. The resistance of slide wire is 400 and its length is 200 '

cm. A 200 cm scale is placed along the slide wire. The slide wire has I mm scaledivisions and it is possible to read upto of a division. The instrument is standardizedwith 1.018 V standard cell with sliding contact at the 101.8 cm mark on scale.Calculate:

7 a)

b)

i. Working currentii. The resistance of series rheostat

Explain about Drysdale-Tinsley type AC PotentiometerIn the measurement of power by a polar potentiometer, the following readings wereobtained.

i) Voltage across a o.2 ohms standard resistance in series with load is1.42 L 32°V.

ii) Voltage across a 200:1 potential divider across the line is I .37 L_ 56°V .

Estimate the current, voltage, power and power factor of the load .SECTION - V

8 a)b)

Describe with the help of diagram the Wheatstone’s bridge for the measurement ofresistances and mention the limitations of Wheatstone’s bridge.Describe with the help of diagram of megger for determining the high resistances

9 a)

b)

Explain how the self-inductance can be measured by using Anderson bridge anddeduce the equations when the bridge is under balanced condition.

Describe with the help of diagram of schering bridge for the measurement ofunknown capacitance.

10 a)

. b)

Code :13EE3108


III B.Tech. I SemesterPOWER SYSTEMS - 1

(Electrical & Electronics Engineering)

Time : 3 hours Max. Marks :60


•k -k *

SECTION - I1 a. Explain the following with neat diagrams:

(a) AC 3 phase 3 wire distribution system(b) AC 3 phase 4 wire system.

b. A.D.C. two wire distributors are fed at FI and F2 at 220 V and 225 V respectively.The total length of the distributor is 250 m. The loads tapped off from fed end FI areLoad in ampere: 20 40 25 35Distance in metre : 50 75 100 200The resistance per km of one conductor is 0.3ohms. Determine the current in varioussections of the distributor and the voltage at the point of minimum potential.

Explain differences between AC distribution and DC distribution.A 2 wire feeder PQR has a load of 100A at R, 50A at Q both at 0.707 P f lag. Theimpedance of PQ is (0.03+j0.05) .Q and that of QR is (0.07 + jO.15) Q . If thevoltage at the far end R is to be maintained 415V. Calculate the voltage at Q and P.

2 a.b.

SECTION - II

a. Derive an expression for inductance of a conductor due to external fluxb. Calculate the inductance per km per phase of a 3-phase transposed line, with distance

between any two conductors being 4m, 4m and 8 meter respectively.

Derive an expression for the capacitance per km of a single phase line taking intoaccount the effect of ground

b. A 3-phase , 50hz, 66kv over head transmission line has conductors arranged at thecomers of an equivalent triangular of 3m sides and the diameter of each conductor is1.5cm determine ‘L‘ and ‘C’ per phase, if 1=100km. also calculate charging current

4 a.

SECTION - III

a. Derive the expression for potential gradient at the surface of a conductor of1-phase transmission line.

b. A Single phase overhead line has two conductors of diameter 1 cm with a spacing of1 metre between centres. If critical voltage for air is 21.1 KV/cm, for what value ofthe line voltage will corona commence?

5

a. Explain various methods for equalizing the potential across the various units in aninsulator string.

b. Each conductor of a three phase overhead line is suspended from a cross arm of asteel tower by a string of 4 suspension insulators. The voltage across the second unitis 14.2kV and across the third 20kV. Find the voltage between the conductors and thestring efficiency.

6

SECTION - IV

Explain how the sag of an overhead line can be calculated in case of supports atdifferent levels.Explain the effect of wind and ice loading are taken into account while determiningthe sag and stress of an overhead line conductor.

7 a.

b.

8 An overhead line with stranded copper conductors is supporteci'on two poles 200mapart having a difference in level of 10 metres. The conductor diameter is 20cm andweighs 2.30Kg. per metre leiigth. Calculate the sag at the lower support under theconditions if wind provides a pressure of 57.5 per square metre of the projected areaand a fact of safety is 4. The maximum tensile strength of copper is 4,220Kg per sq.cm.

SECTION - V

9 a . State the classification of cables (according to voltage) and discuss their generalconstruction.

b. What is meant by capacitance grading of a cable. Derive expression for capacitanceand maximum potential gradients in two (or more) dielectrics of a graded cable interms of dielectric constants and radius of core and overall radius etc.

10 a. Derive the expression for the insulation resistance of a single core cable.A 11 kv, 50 Hz, single-phase cable has a diameter of 10 mm and an internalsheath radius of 15 mm. If the dielectric has a relative permittivity of 24,determine for a 2.5 km length cablei. the capacitanceii. the charging current.

b.

Code : I3EC3103


III B.Tech. I SemesterANALOG IC APPLICATIONS

(Common for EEE & ECE)



•k -k *

SECTION - I

Explain the meaning of open loop and closed loop operation of an Op-ampDefine the terms Common mode rejection Ratio and Slew RateExplain the methods of increasing the input resistance of an Op-ampWhy is cascode configuration used in an Op-amp

1 a)b)

2 a)b)

SECTION - II

What is the Precision Diode? Name the circuit that is used to detect the peak value of thenon-sinusoidal waveformsDraw the circuit of Clipper which will clip the input signal below a reference voltage

3 a)

b)

What are the limitations of an ordinary Op-amp differentiator? Draw the circuit of a practicaldifferentiator that will eliminate these limitations.Explain why integrators are preferred over differentiators in analog computer

4 a)

b)

SECTION - mDraw and explain the functional diagram of 555 Timer .Draw the circuit of a Schmitt Trigger using 555 Timer and explain its operation.

5 a)b)

What is the major difference between Digital and Analog PLLsWhat is the range of modulating input voltage applied to a VCO

6 a)b)

SECTION - IV

What is the Roll of rate of a first order Filter? Why do we use higher order filtersDesign a High pass filter at a cut off frequency of 1 KHz and a pass band gain of 2

7 a)b)

Explain the characteristics of a three terminal 1C regulatorsDraw the functional diagram of a 723 regulator

SECTION - V

8 a)b)

Describe the various types of electronic switches used in D/A convertersWhat is the conversion time of a 10 bit Successive approximation A/D converter if itsinput clock is 5MHz

9 a)b)

Explain the operation of Dual -Slope ADCExplain the important specifications of D/A and A/D converters

10 a)b)

t <4/

nt.'"

. .. .<•

f

Code: 13EE3IQ6B.TECH. DEGREE EXAMINATION, NOVEMBER 2015

III B.Tech I SemesterLINEAR CONTROL SYSTEMS

(Common for EEE & ECE)Time: 3 hours Max. Marks: 604 s


k ~k -k

Section I1) (a)Compare and contrast closed loop control systems with open loop control systems

(b)Reduce the following block diagram to a single transfer function.

R( s ) C(s )>

2) (a)State & explain mason’s gain formula for signal flow graph.(b)Using Signal Flow graph, obtain the transfer function of the following system.

CCS)-o

\

Section II

3) Obtain the transfer function of AC servomotor4) What is a servo motor? Derive the transfer function of field controlled dc servomotor

with neat sketch.

SECTION III5) (a)Derive the time response characteristics of first order system shown below. Also

sketch the time response characteristics

RO

H

Voco

(b)What is the importance of Time constant?

6) (a) Define Gain Margin & Phase Margin.

(b) For a unity feedback system G( s )S ( s + 2) O + 3) ( s + 4)

also give the range of K for which system is stable.

K sketch the root locus and

Section IV

1007) Draw the Nyquist plot for the open loop function G( s ) ( H ( s ) =-S( s + 5) ( s + 10)8) Sketch the bode plot for the following system

S2G(s) =

(1+0.2S)(1+0.02S)

Section V

9) Explain in detail the procedure steps involved in the design of lead compensator usingbode plot.

10)Design a lead compensator for unity feedback system whose open loop transferfunction G ( s ) K

to satisfy the following specifications.(S'+ l)(5+5)(a) Velocity error constant KV > 50 (b) Phase margin > 20

Code ."13CE3107


ENVIRONMENTAL STUDIES(Common to EEE & ECE)

Time : 3 hours Max. Marks :6G

Answer FlVE Questions, Choosing ONE Question from each sectionAll Questions carry equal marks

if if *

SECTION - I

1 a) Discuss the models of energy flow in an ecosystem.What is Environmental Science? Explain about major environmental components.b)

(or)2 a) What do your mean by consumptive use value and productive use value?

Write briefly about the different types of diversity in Ecosystems.b)

SECTION - II

Differentiate between renewable and non-renewable resources.Impacts on over-utilization of surface and ground water.

3 a)b)

(or)What are the effects of deforestation on environment?Discuss the environmental effects of extracting mineral resources.

4 a)b)

SECTION - III

Discuss on suitable methods for industrial solid waste management.Describe the causes, effects and control measures of Air pollution.a)

b)(or)

What is Compost? How does it work ?Briefly describe the sources, effects and control of noise pollution.

6 a)b)

SECTION - IV

Discuss the influence of environmental parameters and pollution on human health.Discuss the environmental implications of urbanization.

a)7b)

(or)Define ELA and explain the functional elements in EIA report.Discuss the concept of sustainable development and its relevance.

a)

SECTION - V

Write briefly about Forest Conservation Act.Write about Kolleru lake-aquaculture project as a case study.

9 a)b)

(or)Write on EIA report for a case study project.Discuss the salient features of Wildlife (Protection) Act.

10 a)b)

• V

i

Code : 13SH2203


III B.Tech. I Semester

ECONOMICS & ACCOUNTANCY

(ELECTRICAL & ELECTRONICS ENGINEERING)

(RE ADMITTED BATCH)

Max. Marks :60Time : 3 hours


•k * *

SECTION - I

Defined Demand. Explain types and determinants of Demand.1

What do you mean by Elasticity of Demand? Explain different types of Elasticity ofDemand and their uses.

2

SECTION - II

Define Production function. Explain the Law of Variable proportions of production.3

Define Cost. Explain any five Cost concepts with their managerial uses.4

SECTION - III

What do you mean by Market? Explain characteristics of Perfect Competitionmarket and Monopoly.

5

Define Monopoly. Explain how the firm attain equilibrium in Monopoly market.6

SECTION - IV

Define Sole trader. Explain features, advantages and limitations of Sole trading firm.7

8 What do you mean by Joint Stock Company? Explain features, advantages andlimitations of Joint Stock Company.

SECTION - V

9 Define Accounting. Explain different concepts and conventions of Accounting.

10 What do you mean by Capital Budgeting? Explain the different methods used inCapital Budgeting to evaluate investment decisions.

Code :13EE3109


III B.Tech. I SemesterELECTROMECHANICAL ENERGY CONVERSION - III

(Electrical & Electronics Engineering)Time : 3 hours Max. Marks :60


Je ie

SECTION

Derive an expression for the generated emf in synchronous machinesWrite in detail about the MMF space wave of three phase distributed winding

Explain the effect of armature reaction on the terminal voltage of an alternatorat (i) UPF (ii) ZPF lagging and (iii) ZPF leading loads.Draw the relevant phasor diagrams.

1. a)b)

2.

SECTION - IIExplain the procedure to find the voltage regulation of an alternator by potier triangle methoda)3.Explain the terms direct axis synchronous reactance and quadrature axis synchronousreactance of a salient pole alternator. Upon what factors do these values depend?Develop the phasor diagram of a salient pole alternator for lagging and leading powerfactor loads using Blondel’s two-reaction theory.

SECTION-- HiDerive an expression for the synchronizing power between the two alternatorsconnected in parallel.A 3000 kVA, 6 pole alternator runs at 1000 rpm on 3.3 kV bus bars. Thesynchronous reactance is 25%. Calculate the synchronizing power and torque permechanical degree of displacement when the. alternator is supplying full load at 0.8 pf

b)

4.

a)5.

b)

lag.Explain the action of synchronous motor under loaded conditions.Draw a phasor diagram of a synchronous motor. Explain the effect ofi. Change in excitation if load is constant.ii. Change in load if excitation is constant.

6. a)b)

SECTION - IVExplain the effect of varying excitation on armature current and power factor in asynchronous motor. Draw V and inverted V curves.Draw the phasor diagrams of synchronous motor for lagging, leading and unitypower factor conditions.

7.

8.

SECTION - VExplain why a single phase induction motor does not self-start. Discuss its operation basedon double revolving field theory.Describe the construction, working and applications of

Capacitors start and run single phase induction motor.Shaded pole motor

9.

10 .

' )ii)

Code : 13EC3102


III B.Tech. I SemesterDIGITAL COMMUNICATIONS

(Electronics & Communication Engineering)


Answer FIVE Questions , Choosing ONE Question from each sectionAll Questions carry equal marks

•k k k

SECTION! - I

Explain the terms Information, Entropy, information rate and Mutual information.A Discrete Source Transmits messages of XI , X2 & X3 with probabilities 0.3, 0.4and 0.3. Calculate entropy of the source.What is channel capacity? Derive the expression for capacity of a Gaussian channel?A source is transmitting six messages A, B, C, D, E & F with probabilities1 /2, 1 /4, 1 /8, 1 /16, 1 /32, 1 /32 respectively. Find the source code words usingShanon-Fanon method and also the Coding Efficiency.

(a)1(b)

2 (a)(b)

SECTION - II

Draw the functional Blocks of a digital communication system and explain.Explain various sampling techniques and a suggest a method to minimizeaperture affect in flat top sampling.

3 (a)(b)

What is the draw back in Delta modulation system? How it can be rectified inAdaptive delta modulation and also explain about Adaptive delta modulationTransmitter and receiver with neat block diagrams.

4

SECTION - HI

What are power spectra? Explain the power spectra of binary PSK and FSKSignals along with graphs.Give the comparison of M-ary digital modulation techniques.

(a)5

(b)

What is Inter symbol interference (1SI)? how it can be minimized in band limitedsignals.Explain the different eye patterns in digital communication techniques.

6 (a)

(b)

SECTION - IV

With the help of block diagram, wave forms and explain the operation DPSKtransmitter and receiver.With the help of block diagram explain QPSK transmitter and receiver

7 (a)

(b)

Derive the probability of error for coherent ASK system.With the help of a block diagram explain the principle and working of correlationreceiver.

8 (a)(b)

SECTION r V

(a ) Briefly discuss about the folSowing Error control techniques,

( i) Linear block codes (ii) Cyclic codes.9

10 (a ) Explain the principle of convolutional coding encoder lor (3, l ) convolution code .with a constraint length of nine bits.

(b) Write short notes on Viterbi algorithm.

Code :13EC3101



ELECTRONIC MEASUREMENTS & INSTRUMENTATION(Electronics & Communication Engineering)



* * *

SECTION-I

1 . a) What are the dynamic characteristics of measuring instruments? Explain.b) Ten measurements of the resistance of a resistor gave 101.20, 101.70, 101.30,

101.00, 101.50, 101.30, 101.20, 101.40, 101.30 and 101.10. Assume thatOnly random errors are present. Calculate ( i ) the arithmetic mean (ii) the standardDeviation (iii ) the probable error.

2 . a) Explain the operation of an A .C voltmeter using Full-wave Rectifier,

b) An a.c voltmeter uses a full wave bridge rectifier and the basic meter withfull scale deflection current of 2 mA and the meter resistance of 500 ohms.Calculate the multiplier resistance for a 10 V r.m .s range on the voltmeter.

SECTION -II

3. a) Explain the pulse and square wave generation with block diagram.b) Draw the block diagram of a function generator that generate square, triangular and

sine wave and explain.

4. a) Explain with the help of a block diagram, the working of a harmonic distortionanalyzer.b) Draw the block diagram of spectrum analyzer and explain.

SECTION -III

5. a) Why delay line is used in the vertical section of an oscilloscope. Explain withRelevant circuit.

b) Draw and explain the block diagram of Dual beam CRO.

6. a) Sketch the basic block diagram of a sampling oscilloscope. Sketch the waveformsthroughout the system, and explain its operation ,

b) Describe how the following measurements can be made with the use of CRO:(ii) phase angle( i) Frequency

SECTION -IV

7. a) Explain the process of measuring the Inductance using the Maxwell bridge,

b) Draw the basic circuit diagram for Q-meter, explain its operation, and writethe equation for Q-factor.

8. a) Explain the process of measuring the capacitance using the Schering bridge.b) Explain the working of Wheat stone bridge and derive its balance condition. How the

unknown resistance can be measured using Wheat stone bridge.

SECTION -V

9. a) What is the role of transducer in Electronic Instrumentation? Discuss the classificationOf Transducers.

b) Define gauge factor of Strain gauge? Explain how displacement can be measured usingunbonded Strain gauge and bridge circuit.

10. a) Explain the Data Acquisition System with neat block diagram,

b) Explain the operation of the following.i) Piezoelectric Transducer ii) Velocity Transducer

Code : 13EC3104

B.TECIi. DEGREE* EXAMINATION, NOVEMBER 2015

III Blech. I SemesterANTENNA & WAVE PROPAGATION

( Electronics & Communication Engineering )


-Answer FIVE Questions, Choosing ONE (Question from each sectionAll Questions cany equal marks

•k k k

SECTION - 1

(a) Explain the terms characteristic impedance and propagation constant of a uniformtransmission line and obtain the expressions for them in terms of the parameters ofline.

( b ) A 50 n lossless transmission line is terminated by a load impedance, ZL ~ 50 + j75fl If the incident power is lOOmW, find the power dissipated by the load.

2 (a) Write note on( i ) Standing Wave Ratio( ii)Reflection Coefficient and

( iii) Input Impedance of Open and Short Circuited Lines.

( b) Write about the measurement of reflection coefficient using Smith chart.

SECTION - i l

(a) What are retarded potentials and explain about potential functions for time varyingfields.

( b) Derive the relation between directivity and maximum effective aperture.

(a ) Derive field expressions for a halfwave dipole antenna.4

( b) Explain the following terms with respect to antenna.( i ).Radiation Intensity ( ii ) Directivity ( iii ).Effective Length

SECTION - I I I

(a ) Derive the expression for array factor of two isotropic elements in endflre arry.5

( b) Explain about the Rhombic antenna.

(a ) Explain current distribution on thin linear wire antennas.6

( b ) Explain the working of a folded dipole antenna.

1 3E E X 1 X )Code : •RA


pi ELTech I Semester

ELECTRICAL & ELECTRONICS ENGINEERING(Mechanical Engineering)

Max. Marks: 60Time: 3 hours


• * * *

SECTION - I

a) Define Voltage & current sources and draw their V-l characteristics.1

b) A battery of twelve cells is required to send the largest possible currentthrough a resistance of 10 ohms. Find the type of grouping which will givethe largest current and estimate its value. The resistance of each cell is6.3ohm and its e.m.f is 1.4 V.

a) Define i ) Peak value ii) RMS value iii) Average value and iv) Form factor ofsinusoidal wave form.

2

b) Find the RMS, average values and Form factor for the waveform shownbelow.

I yfs.

10 A A / \\\I . !}r i

\ 47Zn lQ L. V '2iziwwm **/**«':'. si

*\ 3TC \V t\

// \\/

SECTION - II

a) Explain the working principle of transformer.3

b) A 3300/220V, 30KVA, l -4> transformer takes a no load ,current of 1.5A when thelow voltage winding in open. The Iron loss component is 0.4A. Find

No load input power. ( ii) Magnetizing component. ( iii) Powerfactor of no load current.

CO

Explain OC and SC tests on 1 -0 transformer with suitable circuit diagrams.4

SECTION - III

a) Define ( i) slip ( ii ) slip speed ( iii) synchronous speed.5

b) Draw toque-slip characteristics of a three phase induction motor and justifyvour answer.

a) What are different types of starting methods of 1 -0 induction motor? Explainany one method.

6

b) Calculate the synchronous speed, slip and rotor frequency of a 3-phase, 50Hz,4-pole induction motor running at 1440 rpm.

SECTION - IV

7 a) Discuss PN diode VI characteristics with neat sketch.

b) Explain about formation of PN Junction.

8 a) Explain the , operation of Center Tapped Full Wave Rectifier with neat circuitdiagram and necessary waveforms.

a) What is ripple factor and obtain the ripple factor for single phase half wave

rectifier.

SECTION - V

9 a) Explain CB Configuration of BJT with neat sketches.b) Draw the standard transistor (PNP, NPN) symbols.

10 a) Explain the mechanism of current flow in a PNP and NPN transistors.

b) Define a and (3 and derive the relation between them.

Code: 13ME3103


III B.Tecfa I Semester

KINEMATICS OF MACHINERY

(Mechanical Engineering)

Time: 3 hours Max Marks: 60

Answer FIVE Questions, Choosing ONE Question from each section

All questions carry equal marks

SECTION r I

1. (a)Distinguish between (i) Machine and Mechanism ii) Kinematic chain, Structure

and Mechanism.

(b)How are the kinematic pahs classified? Explain with examples.

2. (a)State the term “ link’. Give some examples. How the links are classified?

(b)What are the inversions used in reciprocating engine and Oldham’s coupling?

Explain them briefly.

SECTION - II

3. (a)Derive the condition of correct steering in the case of an automobile. Draw a neat

sketch of Davis steering^ gear and show that the condition for correct steering.

(b)What is Chebychev spacing ? What is its significance?

4. (a)An Ackermann steering gear does not satisfy the fundamental equation of a

steering gear at all positions. Yet it is widely used. Why?

(b)Design a four link mechanism if the motions of the input and output links are

governed by a function y = x1'5 and x varies from 1 to 4. Assume 0 to vary from 30° to

120° and ^ from 60° to 130° where 0 and represent their usual meanings. The

length of the fixed link is 30 mm. Use Chebychev spacing of accuracy points.

SECTION - III

5. (a)In a slider crank mechanism, the lengths of crank OB and connecting rod AB are

100 mm and 400 mm respectively. If the crank makes an angle of 45° with IDC and

rotates clockwise with uniform angular velocity of 10 rad/sec, determine i) the

velocity of the slider at A and ii) angular velocity of the connecting rod AB.

(b)Derive an expression for the magnitude and direction of Corioli’s component of

acceleration.

f

6. (a)What is rubbing velocity? Explain with an example how you determine the rubbingvelocities at the revolute pin joints of a mechanism?(b)In a slider crank mechanism, the lengths of crank OA and connecting rod AB are480 mm and 1600 mm respectively. Determine the acceleration of a point equidistant ,

/from both ends of the connecting rod when crank makes an angle of 60° with ODCand rotates clockwise with a velocity of 20 rad/sec.

SECTION - IV7. (a)What is path of contact? Derive the relation for its magnitude.

(b)Two 20° involute spur gears have a module of 10 mm. The addendum is onemodule. The meshing gears have 50 teeth and 13 teeth. Does the interference occur?If it occurs, to what value should the pressure angle be changed to eliminateinterference?

8. (a)What are conjugate teeth? Why they are not used for power transmission? Why thecycloidal forms of gear teeth affect the velocity ratio?

t(b)Two involute gears in a mesh have a module of 8 mm and a pressure angle of 20°.The mating toothed wheels have 57 and 23 teeth. If the addenda on them are equal toone module, find the number of pairs of teeth in contact.

SECTION - V9. (a)What is differential gear of an automobile? How does it function?

(b)In an epicyclic gear train, an arm carries two wheels A and B having 36 and 45teeth respectively. If the arm rotates at 150 rpm in the counter clockwise directionabout the centre of the wheel A which is fixed, determine the speed of wheel B. If thewheel A instead of being fixed makes 300 rpm in the clockwise direction, what willbe the speed of B? -

10. (a)How do you determine the torques in epicyclic gear trams?(b)Determine a sustainable train of wheels to satisfy the requirements of a clock, theminute hand of which is fixed to a spindle and the hour hand to a sleeve rotatingfreely on the sample spindle. The pitch is same for all the wheels and each wheel hasat least 11 teeth. The total number of teeth should be as small as possible.

1

i

Code : 13ME3102B.TECH. DEGREE EXAMINATION, NOVEMBER 2015

ENGINEERING METROLOGY(Mechanical! Engineering)

Time : 3 hours Max Marks: 60

Answer FIVE Questions, Choosing ONE Question from each sectionAll questions carry equal marks

SECTION!

1 (a) Briefly discuss about (i) Line Standards and (ii) End Standards

(b) Name the types of plug gauges and draw neat sketches of any three of them by statingtheir applications.

(a) Explain the concept of interchangeability with an example.

(b) State and explain the Taylor’s principle of limit gauges design.

2.

SECTION-II

3 (a) Describe the use of optical bevel protractor.(b) The angle of a taper plug gauge is to be checked using angle gauges and the angle

dekkor. Sketch the set up and describe the procedure.

4 (a) Describe the various methods for checking squareness of machined surfaces.

(b) Describe working principle, construction and advantages of anyone optical comparator.

SECTION-III

5 (a) Explain how interference bands are formed by using optical flats.

(b) Explain the following terms :(i) Skid and stylus

Mean line of profile(iii) RMS value(ii)

6 (a) List the common sources of light used for interferometry and explain the essentialproperties of light wave for interference.

(b) Explain the surface roughness texture with respect to its roughness, waviness, lay andsampling length.

SECTION-IV

7 (a) Explain the pitch errors and their effects in the function of gears.

(b) What is best wire size? Calculate the diameter of the best wire for an M20X25 screw.

[P.T.O.]

8 (a) Explain the three wire method for measuring effective diameter of screw with the helpof derivation.

(b) Describe the working principle and applications of gear rolling testers.

SECTION-V

9 (a) Explain the procedure with a neat sketch to check the alignment of both centers of alathe machine in a vertical plane.

(b) What are the advantages of using CMM?

10 (a) Describe the set up for testing true running of the axis of rotation of arbor of ahorizontal milling machine.

(b) Define control charts and explain any two control charts.

Code j 133H3.101

B.TECH, DEGREE EXAMINATION, NOVEMBER 2015

III B.Tech. I S2 rii esterECONOMICS & ACCOUNTANCY




k k k

SECTION - 3

1 a) Define Demand Explain different types of Demandb) Explain the determinants of Demand of a product.

What do you mean by Elasticity of demand? Explain different types of Elasticity ofdemand with their significance.

2

SECTION - II

3 , a) Define Production function. Explain Cobb- Douglas Production function,

b) Explain assumptions and. limitations of Breakeven Analysis.

Define production. Explain the law of variable proportions of the production.4

SECTION - HI

What do you mean by Perfect completion market? Explain how the firm attains

equilibrium price and output in perfect competition market.5

a) Define Monopoly? Explain characteristics of monopoly market.b) Explain how the firm attains equilibrium price and output in Monopoly market..6

SECTION - IV

Define Sole trader. Explain the features of Sole trading firm with its merits and

demerits.7

8 a) Define Partnership. Explain details of Partnership deed,

b) Distinguish between Shares and Debentures.

SECTION - V

Define Accounting. Explain different concepts and principles of accounting.9

What do you mean by Capital Budgeting? Explain different techniques of Capital

Budgeting.10

Code : 13ME3101


III B.Tech. I SemesterAPPLIED THERMODYNAMICS - II




* * *

SECTION - S

Explain the need of staging the compression process.A single acting two stage compressor with complete intercooling delivers 10.5kg/min of air at 16 bar. The suction occurs at 1 bar and 27°C. the compression andexpansion processes are reversible, polytropic index n=1.3. Calculate:i) the power required to drive the compressorii) the isothermal efficiencyiii) the free air deliveryiv) the heat transferred in intercooler, if the compressor runs at 440 ipm.Explain with the help of neat sketch the working of a single stage reciprocating aircompressor.A single stage, double acting compressor has a free air delivery of 14 m3/minmeasured at 1.013 bar and 15°C. The pressure and temperature in the cylinderduring induction are 0.95 bar 32°C. The delivery pressure is 7 bar and index ofcompression and expansion, n=1.3. The clearance volume is 5% of the sweptvolume. Calculate:i) indicated power requiredii) Volumetric efficiency.

(a)1(b)

(a)2

(b)

SECTION - SI

What do you understand by slip factor and power input factor in centrifugalcompressor?A centrifugal compressor used as a supercharger for aero-engines handles 150kg/min of air. The suction pressure and temperature are 1 bar and 290 K. the suction

velocity is 80 m/s. After compression in the impeller the conditions are 1.5 bar, 345K and 220 m/s. Calculate:i) isentropic efficiencyiii) The overall efficiency of the unit.It may be assumed that K.E. of air gained in the impeller is entirely converted into

pressure in the diffuser.

(a)3

(b)

ii) power required to drive the compressor.

4 (a) Compare reciprocating and rotary compressors.(b) A centrifugal compressor with 70% isentropic efficiency delivers 20 kg of air perminute at a pressure of 1 bar, find the actual temperature of the air at exit. Also findthe power required to run the compressor, if its mechanical efficiency is 95%. Takey and cp for air as 1.4 and 1 kJ/kg K respectively.

SECTION - III

(a) Explain the methods to improve the thermal efficiency of gas turbine plant.(b) The intake conditions of a constant pressure gas turbine are 1 bar and 288 K. Themaximum pressure and temperature in the cycle are 5 bar and 853 K. What must bethe isentropic efficiency of the turbine if the overall plant efficiency is 18%?Assume isentropic efficiency of compressor is 80%. Take CP=1.004 kJ/kg K for air,Cp=1.096 kJ/lcg K for gases and R = 287 J/kg K for air and gas.

5

(a) Define the following terms i) Thrust ii) Thrust power iii) propulsive efficiency(b) Explain the differences between turbo jet and turbo prop engines.6

SECTION - IV

(a) Explain the effect of superheating in a simple vapour compression refrigerationcycle.(b) A refrigerating machine using R-12 as working fluid works between the temperatures-18°C and 37°C. The enthalpy of liquid at 37 C is 78 kJ/kg. The enthalpies of R-12entering and leaving the compressor are 210 kJ/kg and 250 kJ/kg respectively. Therate of circulation of refrigerant is 5 kg/min and efficiency of compressor is 85%.Determine:

i) Capacity of the plant in tons of refrigeration,ii) Power required to run the plant,

7

iii) COP of the plant.

(a) Compare dry and wet compression in vapour compression refrigeration system.(b) Explain with a neat sketch, working of Lithium bromide absorption refrigerationsystem.

8

SECTION - V

(a) Define Bypass factor?(b) The pressure and temperature of mixture of dry air and water vapour are 736 mm ofHg and 21°C. The dew point temperature of the mixture is 15°C, find the followings:

i) Partial pressure of water vapour in the mixtureiii) Specific humidityv) specific volume of mixture per kg of dry air.

9

ii) Relative humidityiv) Enthalpy of mixture per kg of dry air.

(a) Explain with a neat sketch the working of a summer air conditioning system.(b) 40 m3 of air per minute at 31°C DBT and 18.5°C WBT is passed over the cooling coil

whose surface temperature is 4.4°C. The coil cooling capacity is 3.86 tons ofrefrigeration under the given condition of air. Determine DBT and WBT of the airleaving the cooling coil. Also find the bypass factor of the coil.

10

Code : 13ME3105B.TECH. DEGREE EXAMINATION, NOVEMBER 2015

III B.Tech I SemesterOPERATION RESEARCH(Mechanical Engineering)Time : 3 hours Max Marks: 60

Answer FIVE Questions, Choosing ONE Question from each sectionAll questions carry equal marks

SECTION-I1 (a) Write about sensitivity analysis.

(b) Solve the following LPPMaximize Z — 3%1 + 2x2subjected to 2 x1 4- X 2 402 x± + 3 X 2 60

x1 + x2 24xlfx2 0

2. Solve the following LP - problem by SIMPLEX Method.Z = Xi - 3X2 + 2X3Minimize

Subject to3xj - x2 + 3x3 < 7- 2xi + 4X2 < 12- 4xi + 3X2 4- 5X3< 10Xi ; x? ; and X3 > 0

SECTION-11

A company has three plants A,B and C and three ware houses P,Q and R.The transportationcost per unit, demand warehouses and as given in the Table below. Find the optimumtransportation plan.

3

Ware housesPlants CapacityQ RPA 50 80 100 400B 90 4022 500

70 100C 55 3001200Demand 400 400 400 1200

Three buildings are to be added to the college campus. Bids are submitted by five contracts.The bid figures are given in millions of rupees and are as shown in table below.4

Bldg.A B CContractor

2.901 1.622 3.10 1.75 2.813 3.05 1.80 2.90

2.854 1.55 2.755 1.70 3.0

Find the assignment of buildings to contractors that will result in a minimum total cost forthe building program

SECTION-III

5 Find the minimum elapsed total time sequence of 2 jobs and 5 machines for the followinginformation by using graphical method.

MachinesSequence

time (in hrs)A B C D EJob 1 2 3 64 2

Sequencetime (in hrs)

C A D E BJob 1 4 5 3 2 6

6 In a machine shop, 8 different products are being manufactured each requiring time on twomachines A and B as given below:

Time (in min) onmachine A

Time (in min) onmachine B

Product

1 30 202 45 303 15 504 20 355 80 366 120 407 65 508 10 20

Determine the optimum sequence of processing of different products inorder to minimize the total manufacturing time for all the products.The total minimum elapsed time.Idle time for machine A and machine B.Name and discuss the scheduling model used.

l.

li

in.IV.

SECTION-IV

What are costs associated with inventory? Determine EOQ for inventory model withuniform demand?

7

Annual demand for an item is 3200 parts. The unit cost is Rs.6 and The inventory carryingcharges are estimated as 25% per annum. If the cost of one procurement is Rs.150 find:

(i) Economic order quantity(ii) Time between two consecutive orders(iii)Number of orders per year(iv)The optimal cost.

8

SECTION-V9 Two competitors A and B are competing for same product. Their different strategies are

given in the following payoff matrix. Use dominance principle to find the optimalstrategies.

I II III IVI 3 42 0

II 3 4 2 4III 4 42 0IV 0 4 0 8

Telephone users arrive at a booth following a poisson distribution with an average time of5 min between one arrival and the next. The time taken for a telephone call is on an average3 min and it follows an exponential distribution. What is the probability that the booth isbusy? How many more booths should be established to reduce the waiting time to less thanor equal to half of the present waiting time?

10

Code ; 13CS3105


III B.Teeh. I SemesterTHEORY OF COMPUTATION

(Computer Science & Engineering)


Answer FIVE Questions, Choosing ONE Question fi om each sectionAll Questions carry equal marks

•k ?V *

SECTION - I

(a) What are the basic differences between Deterministic Finite Automation andnon-Deterministic Finite Automation?

(b) Prove that if n is a positive integer such that n mod 4 is 2 or 3 than n is not aperfect square.

1

(a) Explain in details about NFA and DFA with examples.(b) Write a short note on Moore and mealy Machines.

2

SECTION! - SI

3 (a) Construct the deterministic finite automata for accepting the set of all stringswith three consecutive 0’s.

(b) Conversion of DFA into regular expression

(a) Prove any two closure properties of regular languages.(b) Using pumping lemma for the regular sets, prove that the language

L = {ambn / m > n} is not regular.

4

SECTION - III

(a) Write a short note on context free grammars.(b) Explain the closure properties of context free languages.

5

(a) Obtain a Greibach normal form grammar equivalent to the context free0 /ASS— >1 / SSA— »

(b) Discuss various applications of Pumping lemma.

6grammar

[P.T.O.]

SECTION - IV

7 (a) State and prove the pumping lemma for CFL.(b) Construct the PDA for the language ( ) {} *+=10 in is /W WCW LR.

8 (a) Discuss about deterministic and Nondeterministic PDA.(b) Explain the differences between tractable and intractable problems with

examples.

SECTION - V

(a) Write short note on TM and write its special features of tm.(b) Explain the various techniques for Turing Machine construction.

9

10 (a) Prove that the Halting problem is undecidable.(b) Prove Lne is recursively enumerable.

Code : 13CS3104


III B.Tech „ I Semester

OBJECT ORIENTED ANALYSIS AND DESIGN(Computer Science & Engineering)


Answer FIVE Questions\ Choosing ONE Question from each sectionk •k *

SECTION - I

(a) What is modeling? Why is modeling important in the development of a softwaresystem?

(b) Give the notations of different kinds of classifiers used in static view.

1

Explain the evolution of Unified Modeling Language.2

SECTION - II

(a) Represent different forms of associations with the help of examples.

(b) Illustrate package representation in UML for library management system.3

(a) How is 'note' represented in UML?

(b) Discuss the different mechanisms used for structural modeling.4

SECTION - III

Construct class and object diagrams for bank management system.5

6 (a) Illustrate the modeling techniques of class diagrams for student data,

(b) Mention the differences between class and object diagram.

SECTION - IV

(a) What is a use case model?

(b) Why is usecase model useful in analysis?7

Construct an activity diagram for ATM application.8

SECTION - V

9 (a) Mention the differences between component and deployment diagrams.

(b) Compare the differences between a thread and a process.

10 (a) Define a static machine. Illustrate the notation for different kinds of states with the

help of an example.

(b) What is the difference between an event and a signal ?

Code : 13CS3103



PRINCIPLES OF PORGRAMMING LANGUAGES '

(Computer Science & Engineering)



* * *

SECTION -

Discuss about various programming domains and their associated languages.1 (a)

Compare procedure Oriented and Object Oriented Programming.(b)

Draw a Parse tree for expressions(i) A:=B+C+A(ii)A:=B*(A+C)

Differentiate between BNF and EBNF.

2 (a)

(b)

SECTION - il

How do you implement primitive data types in a programming language?

Define Union.What is the difference between record and union?3 (a)

(b)

Write notes on Relational and boolean expressions.What are the advantages and disadvantages of allowing mixed-mode arithmetic

expressions?

4 (a)(b)

SECTION - II!

5 (a) Explain in detail about the design issues in providing subprograms.

What are the different semantic models of parameter passing?(b)

Define the following(a)Stack-dynamic(b)Explicit heap-dynamic(c)lmplicit heap-dynamic(d)Static

6

SECTION - IV

7 (a) Describe ADT with suitable examples.(b) Briefly explain about naming encapsulation.

8 Explain the object -Oriented Programming support in Java.

SECTION - V

9 (a) Explain the uses of exception handling in programming languages,

(b) Explain exception handling in C++.10 (a) What is functional programming? Explain its merits and demerits,

(b) Discuss the applications of functional languages.

Code : 13CS3I01

, B .TECIi . DEGREE EXAMINATION, NOVEMBER 2015

III B.Tech. I SemesterDESIGN AND ANALYSIS OF ALGORITHMS

(Computer Science & Engineer ing)



* * *

SECTION - I

i a. What is the theory over the use of Divide and Conquer Methodology? Why doyou think using Divide and Conquer Methodology improves the performance ofan algorithm?

b. Write a program which can best explain the concept of Divide and ConquerMethodology.

a. Write the code for Quick Sort. Explain the working with an exampleb. Define an algorithm. What are the various properties of an algorithm

2

SECTION - I I

What is the theory over the use of Greedy Methodology? What are its applications?Write a program which can best explain the concept of Greedy Methodology.

a. Explain All-Pair Shortest Path Algorithmb. What is dynamic programming? Explain with an example.

4

SECTION - I I I

a. Define the 8-Queens problem in the context of back tracking.

b. Given a chessboard, a knight is placed on an arbitrary square with coordinates.

The problem is to determine 255 knight moves such that every square of theboard is visited once if such a sequence of moves exists. Devise an algorithm tosolve this problem.

5

a. Explain graph coloring algorithm with an exampleb . Discuss in detail Knapsack Problem

6

SECTION - IV

7 » a. Apply Travelling Salesman Problem to the graph given belowA

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V - . /s 3

f V"4 / H\

Vs B\ l 1

V

42 t

cD

b. State the difference between branch-and-bound technique and dynamicprogramming.

8 a. Discuss in detail Inverting Lower Triangular Matrices with an exampleb. Explain Lower Bounds through Reductions with an example

SECTION - V

9a. Explain in detail NP-Hard problems with examplesb. Discuss pros and cons of PRAM algorithms.

10a. Discuss in detail NP-Hard Scheduling Problemsb. Discuss briefly about different PRAM models

A

Code : 13CS3102

B.TECH. DEGREE EXAMINATION, NOVEMBER, 2015

III BETech. I SemesterDATA COMMUNICATIONS AND COMPUTER NETWORKS

(Computer Science & Engineering )



•k k k

SECTION - I

Describe about Data Communication and its types..Explain about micro waves and its applications in detail.

1 (a)

(b)

Explain how the data transmitted from layer to layer2

SECTION II

Explain about MAC layer and its Architecture3

Explain Bluetooth with neat diagram4

SECTION - ill

Describe about Routing and its methods in detail.5

Explain Distance Vector Routing Algorithm with example.6

SECTION - IV

Explain about internet protocol with neat diagram7

Differentiate UDP over TCP.8

SECTION - V

Explain about different types of servers.9

Explain the following :a) SNMP b) FTP c) SMTP

10

Code.8 13CS3106 .

B.TECH. DEGREE EXAMINATION, NOVEMBER 2015111 B.Tech. 1 Semester

S*u

SOFTWARE PROJECT MANAGEMENT(Computer Science & Engineering)


Answer FIVE Questions, Choosing ONE Question from each section' All Questions carry equal marks

k -k -k

SECTION - I

1 (a) What are the different risks that threaten the project during Risk plan.(b) Why projects will fail? List the reasons for project failures.

2 (a) How Delphi process will be useful in estimating software tasks?(b) Different estimation techniques are available to you? As a project manager of a

company how you will select a particular estimation technique and on what basis?

SECTION - II

(a) How gantt chart is helpful in creating a schedule. Explain with an example?(b) What are the steps taken by project manager to optimize the schedule?

Explain in detail the goals of any three review techniques.

3

4

SECTION - III

(a) Discuss the use of software requirements specification in industry with an example?(b) What is the responsibility of CCB in Change control process?

(a) Discuss various steps performed in Subversion Basic Work Cycle.(b) Evaluate the performance of Unit testing with an example.

5

6

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SECTION - IV5(a) How quality of software is affected through software testing?

(b) Differentiate test plan and test cases with a suitable example?

(a) Explain the process of test automation.(b) Why can’t industry doesn’t accept changes from client once the project has been

started? Justify your answer.

7 ;?!

58 \

)

SECTION - V

As a project manager how do you manage your team? Explain in detail with anexample?

(a) State various management issues in outsourced projects.. (b) Write the functions of Six Sigma.

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V

iii b.tech. — isemester

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