Code No. 2012FACULTY OF ENGINEERING

B.E. 2/4 (Civil) I-Semester (Suppl) Examination, June 2013Subject : Engineering Geology

Time : 3 Hours Max. Marks: 75Note: Answer all questions of Part - A and answer any five questions from Part-B.

PART A (25 Marks)1. What is soil liquefaction? (2)2. Define the terms porosity and permeability of rocks. (2)3. Explain the terms stress and strain and their relationship. (3)4. Match the following: (4)

(a) Aquifer (i) Clay(b) Aquitard (ii) Granite(c) Aquiclude (iii) Sand(d) Aquifuse (iv) Sandy clay

5. Explain plate tectonics theory. (2)6. Write about Highway aggregates. (3)7. List out Ground water provinces of India. (3)8. What is over break? (2)9. Define Disaster. Classify them. (2)10. Write about decorative stones. (2)

PART B (50 Marks)11.(a) Write distinguish features of Igneous and sedimentary rocks. (5)

(b) How do you recognize the fold structures in the field ? Describe the geometricclassification of folds. (5)

12. Explain about Indian soils and their formation. (10)13.(a) How do you determine grade of rock weathering by petro graphic and rock

testing? (5)(b) Explain in detail Aerial photographs. (5)

14.(a) What are aquifers? Describe different types of aquifers. (5)(b) Write ground water provinces of India. (5)

15.(a) Write notes on : (6)(i) Borehole drilling (ii) Building stores (iii) Land slides

(b) Write about electrical resistivity surveys. (4)16.(a) Write about Engineering geological investigations for tunnels. (5)

(b) Illustrate the foundation geology of any one of the Indian dam site. (5)17.(a) Describe Disaster mitigation measures in India. (5)

(b) Write about geological aspects of earthquakes. (5)*****

Code No. 2037FACULTY OF ENGINEERING

B.E. 2/4 (EE / Inst.) I-Semester (Suppl) Examination, June 2013Subject : Electrical Measurements and Instruments

Time : 3 Hours Max. Marks: 75Note: Answer all questions of Part - A and answer any five questions from Part-B.

PART A (25 Marks)1. Explain the significance of measurement in Electrical measurement system. (3)2. Discuss how the range of voltmeter can be extended. (2)3. How can you minimize the phase error and speed error in 1- Energy meter? (3)4. Define Electrical Resonance. (2)5. What is the functions of Wagners Earthing devices? (2)6. Write any four applications of Ac bridge circuits. (2)7. Write the reasons for using ring type specimens for ballistic tests. (3)8. Distinguish between a flux meter and ballistic galvanometer. (3)9. What is meant by standardization of DC potentiometer? (2)10.Explain calibration of wattmeter with AC potentiometer. (3)

PART B (50 Marks)11.With relevant diagrams explain the constructional details and working of

Dynamometer instrument. What is the general characters of scale division of suchan instrument? (10)

12. A moving coil instrument whose resistance is 25 gives full-scale deflection witha voltage of 25mV. This instrument is to be used with a series multiplier to extend itsrange to 10V. Calculate the error caused by 10oC rise in temperature. (10)

13.(a) Explain with a neat sketch the working of an Electrical resonance type frequencymeter. (5)

(b) Discuss in detail the working of a single phase induction type Energy meter. (5)14. Explain the Kelvin's Double Bridge for measurement of low resistance and also

derive an expression for unknown resistance in terms of known values. (10)15. Derive expression for deflection sensitivity and deflection factor of CRT in an

oscilloscope. (10)16. What is meant by ratio and phase angle error of a current transformer ? Derive the

necessary expressions for these errors. (10)17.(a) With the help of neat diagram, explain the working of an AC coordinate type

potentiometer. (5)(b) Explain how to obtain hysteresis loop using C.R.O. (5)

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Code No. 2017FACULTY OF ENGINEERING

B.E. 2/4 (ECE) I-Semester (Suppl) Examination, June 2013Subject : Electronic Devices

Time : 3 Hours Max. Marks: 75Note: Answer all questions of Part - A and answer any five questions from Part-B.

PART A (25 Marks)1. Draw the equivalent circuit of a diode in Reverse and forward bias. (2)2. Determine the Temperature coefficient of a 5 V zener diode (rated 25oC value) if

the nominal voltage drops to 4.8 V at a temperature of 100oC. (3)3. Define Peak Inverse Voltage and Regulation of a Rectifier. (2)4. Write the typical specifications of LED. (2)5. Draw the voltage divider circuit and derive an expression for its stability factor. (3) (3)6. Explain base width modulation in common base transistor. (3)7. Draw the T-model of a Common Base Transistor. (2)8. Define h-parameters for a BJT. (2)9. Explain the field effect phenomena in JFET. (3)10.Prove that the transconductance gm of a JFET is given by

gm = 2| | DS DSSpI IV (3)

PART B (5x10=50 Marks)11.(a) Derive an expression for the total current as a function of the applied voltage

in a diode. (6)(b) In an n-type silicon the donor concentration is 1 atom per 2x108 silicon

atoms. Assume that the effective mass of the electron equals the true massand the density of atoms in the silicon in 5x1022 atoms /Cm3. At whattemperature will the Fermi level coincide with the edge of the conductionband? (4)

12.(a) Draw the Full wave rectifier and derive the expression for Irms, ripple factorand TUF. (5)

(b) A 220v, 50 Hz ac voltage is applied to the primary of 4:1 step downtransformer, which is used in bridge rectifier, having a load resistance of1k, uses Si diode with Rf = 50 . Determine the following : (5)(i) DC O/P voltage (ii) DC power delivered to load(iii) PIV of each diode (iv) Output frequency (v) Efficiency ()

13.(a) Explain how a transistor acts as an Amplifier. (5)(b) Explain different components of current flow through the structure of a N-P-N

transistor. How the emitter injection efficiency and base transport factorinfluences the amplifications factor? (5)

14.(a) Design a self bias circuit for a silicon transistor having VBE = 0.6V, =99.Desired operating point VCE=5V and IC =1mA. Assume VCC= 10V, RC=3.0 kand stability factor S = 5. (5)

(b) Explain the operation of SCR. (5)15.(a) Draw the hybrid equivalent circuit for common emitter configuration and find the

expressions for current gain, voltage gain, input impedance and O/P Admittance. (6)(b) A junction transistor has the following h-parameters hie=2000 ; hre = 1.6x10-4,

hfe=49, hoe=50 A/V. Determine the current gain, voltage gain, input resistanceand O/P resistance of the CE amplifier. If the load resistance is 30k and thesource resistance is 600 . (4)

16.(a) Explain the biasing for zero drift current in JFET and prove that Vp VGS = 0.628. (5)(b) With a neat sketch, explain the working of a p-channel enhancement mode

MOSFET and draw the transfer characteristics. (5)17.Write short notes on : (3+3+4)

(a) LCD (b) UJT (c) Bias compensation Techniques of BJT*****

Code No. 2041FACULTY OF ENGINEERING

B.E. 2/4 (AE) I-Semester (Suppl) Examination, June 2013Subject : Automotive Electrical and Electronics

Time : 3 Hours Max. Marks: 75Note: Answer all questions of Part - A and answer any five questions from Part-B.

PART A (25 Marks)1. Why should the battery not overcharged? (2)2. Why do we use a relay in the horn circuit? (2)3. State problems with inertia a type drive. (2)4. What improvements in the starting system are possible with an electronic control? (3)5. What is armature reaction? (3)6. What is a commutator? (3)7. What is seebeck effect? (3)8. Name different sensors used for measurement of pressure. (2)9. What is a microprocessor? (2)10. Enumerate the main units of any engine management system. (3)

PART B (50 Marks)11. Discuss in detail various tests of ascertaining the fitness of a battery to be used in a

vehicle. (10)12.(a) Why is it necessary to aim the headlights correctly? Explain the compute

procedure for the same. (5)(b) Discuss in detail the characteristics of a DC motor. (5)

13.(a) Explain the principle of a generator. (5)(b) What is the necessity of generator output control? Discuss various methods of

achieving the same. (5)14.(a) What are the principle aims of engine developer? (5)

(b) What are the various sensor that can be used for displacement and positionsensing in an engine ? Briefly explain them. (5)

15. Write a short notes on : (10)(a) On board diagnostics (b) Dash board diagnostics (c) Security and warning systems

16. Write a short notes on (10)(a) EMI and EMC (b) Bendin drives

17. Explain the principle of operation of voltage and current regulators in chargingsystem. (10)

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Code No. 2028FACULTY OF ENGINEERING

B.E. 2/4 (CSE) I-Semester (Suppl) Examination, June 2013Subject : Computer Architecture

Time : 3 Hours Max. Marks: 75Note: Answer all questions of Part - A and answer any five questions from Part-B.

PART A (25 Marks)1. Distinguish between half adder and full adder. (3)2. What logic micro operations can be performed with two variables? (2)3. What is the use of control address register in micro programmed control

organization? (2)4. How is the effective address calculated in Indexed Addressing mode? (2)5. What is an Instruction pipeline? Explain with suitable examples. (3)6. What is an array multiplier? (2)7. What are the methods of data transfer between I/O peripheral devices and memory?

Explain with example. (3)8. What is the advantage of Block Transfer? (2)9. What do you understand by match Logic in associative memory device? (3)10. Differentiate between register reference and memory reference instruction. (3)

PART B (50 Marks)11.(a) What is Register Transfer language? Explain. (5)

(b) Explain instruction cycle with the help of a flow chart. (5)12. Explain the different instruction formats with reference to CPU organization with an

example. (10)13.(a) Differentiate between general register organization and stack organization of a

computer. (5)(b) Write the Assembly language program to perform X=(A+B/C) * (B+D) using three,

two, one and zero address instructions. (5)14.(a) Explain the characteristics of RISC and CISC processors. (5)

(b) Explain Booth's Algorithm with an example. (5)15.(a) Distinguish between programme I/O and interrupt driven I/O. (5)

(b) Discuss in detail about serial communication. (5)16.(a) What do you understand by virtual memory? Explain. (5)

(b) Explain about read and write operations in Associative memory. (5)17.Write short notes on the following: (10)

(a) DMA data Transfer (b) Daisy chaining (c) Memory interleaving*****

Code No. 2034FACULTY OF INFORMATICS

B.E. 2/4 (IT) I-Semester (Suppl) Examination, June 2013Subject : Electrical Circuits and Machines

Time : 3 Hours Max. Marks: 75Note: Answer all questions of Part - A and answer any five questions from Part-B.

PART A (25 Marks)1. What is the apparent power if the active and reactive powers are P and Q

respectively? (2)2. Obtain the form factor of a sinusoidal voltage. (3)3. How are its phase and line voltages related in a balanced three-phase star and delta

connections? (3)4. Draw the no-load equivalent circuit of a single phase transformer and explain the

significance of each parameter. (3)5. Show the external characteristic of a shunt generator. (2)6. Draw the speed torque characteristics of a separately excited dc motor with voltage

control. (2)7. What is the slip of an induction motor of a 4-pole, 50Ha running at a speed of 1425

rpm? (2)8. Sketch torque speed characteristics of a three-phase induction motor with voltage

control. Consider rated and half the rated voltage. (3)9. What do you understand by synchronous impedance of an alternator? (3)10. What are the applications of stepper motors? (2)

PART B (50 Marks)11.(a) Explain what you have understood by Thevenin equivalent circuit. (3)

(b) Show the steady current, voltage, and power waveforms in an inductorconducting cosinusoidal current. Also, show that the average power inthe inductor is zero. (7)

12. A balanced Y-connected load having an impedance of (72 + j 21) ohms per phase isconnected in parallel with a balance delta connected load having an impedance of150 0 ohm per phase. The paralleled loads are fed from a line having animpedance of j1 ohm per phase. The magnitude of the line to neutral voltage of theY-loads is 7650 V.(a) Draw the complete circuit diagram stated above showing all the parameters with

their values. (4)(b) Calculate the magnitude of the current in the line feeding the loads. (6)

13.(a) What are the essential differences between dc motor and dc generator fromenergy conversion and V-I relations point of view. Show the necessary diagrams. (6)

(b) List out the different parts of a dc machine. (4)14.(a) Show the per phase stator equivalent and rotor equivalent circuit at any slips S of

a three-phase induction motor. (5)(b) Neglecting stator losses and no load losses, obtain expressions for air gap power(Pag), rotor copper losses and gross mechanical power output. (5)

15.(a) Obtain an expression for the EMF induced in an alternator. (5)(b) Explain with a neat diagram the operation of a single-phase capacitor start and

capacitor run induction motor. Mention its applications. (5)16.(a) Explain the principle of operation of an autotransformers. (3)

(b) A two winding 10 KVA, 440 / 110V transform is reconnected as step down550 /440V auto transformer. Calculate

(i) primary and secondary currents of the two winding transformer(ii) Input and output current of autotransformer(iii) KVA rating of the autotransformer. (7)

17.Write short notes on the following: (5+5)(a) Three-point starts (b) Stepper motor

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