(code: 3331901) semester iii€¦ · give their causes & remedies 5 explain centrifugal casting...

MANUFACTURING ENGINEERING - I

(Code: 3331901)

Semester – III

ASSIGNMENT- 01

CO 1. Identify various manufacturing processes to produce components as per requirements.

1 Define and classify manufacturing processes.

2 Define & explain recrystalisation temperature. Explain at least four factors affecting

recrystalisation temperature of metals.

3 Explain residual stresses with its effects

4 Define the following terms.

(i) Ductility (ii) hardness (iii) Malleability (iv) Toughness (v) Brittleness (vi) Castability

ASSIGNMENT- 02

CO 2. Use appropriate metal working processes for mechanical components.

1 Name different forging methods and explain any one

2 State the common defects in forged components stating the reasons for those defects.

3 Differentiate Hot working and Cold working of metals.

4 Explain difference between piercing (punching) and blanking.

5 List various types of rolling mills and explain any two of them with neat sketches

6 State different methods of extrusion process. Explain any one with neat sketch

7 Write a short note on spinning process with neat & clean sketch.

8 Classify various drawing operation & explain any one operation with the help of diagram.

ASSIGNMENT- 03

CO 3. Use appropriate casting processes for mechanical components.

1 Explain sequence of steps of sand moulding

2 Name various materials for Pattern. Discuss their merits & Demerits.

3 Explain type of patterns with field of application of each.

4 List any five defects in sand casting. Give their causes & remedies

5 Explain centrifugal casting processes.

6 Enlist different electric furnaces and explain induction furnace with neat sketch

ASSIGNMENT- 04

CO 4. Select moulding methods suitable for non metal components.

1 Explain injection molding process with diagram and state its advantages and disadvantages

2 Explain blow molding and state its advantages and disadvantages.

3 Describe plastic extrusion process and state its applications

ASSIGNMENT- 05

CO 5. Select metal joining methods for various applications.

1 Differentiate soldering, brazing & welding.

2 Explain Oxy-acetylene gas welding.

3 Explain Electric arc welding Process.

4 State names of resistance welding processes. Explain any one.

5 Explain TIG & MIG welding processes.

6 Draw three types of oxy-acetylene flames showing different zones on it

ASSIGNEMT – 1

CO1: Interpret 1st law and 2nd law of thermodynamics to simple systems inferring the basic concepts.

R.C.T.I. SOLA, AHMEDABAD

MECHANICAL ENGINEERING DEPARTMENT

Subject Code: 3331902 Subject Name: THERMODYNAMICS

UNIT:- 1,2 & 4

QUESTIONS: - (Attach separate pages for answer)

GROUP: - 1

1. Explain all types of thermodynamic systems with classification of boundaries having suitable examples and diagrams.

2. Derive SFEE equation. Write four conditions for steady flow. 3. Write Clausius statement for 2nd law of thermodynamics & explain with neat sketch. 4. State and explain limitations of first law of thermodynamics. 5. A heat engine receives energy of 1000 kJ/min and produces power of 8 kW. Find out thermal

efficiency of heat engine and heat rejection rate.

GROUP: - 2

1. Define thermodynamics property, classify and explain thermodynamics properties. 2. State limitations of 1st law of thermodynamics. Explain Kelvin-Planck statements of 2nd law of

thermodynamics.

3. Write full form of SFEE and apply SFEE Equation for steam engine. 4. 10 kg air enters into a nozzle with negligible velocity. Its pressure reduces from 392.4 kPa to

196.4 KPa during the flow from the nozzle and temperature reduces from 9500C to 7600C during

the flow. Find velocity of air at exit. Take γ = 1.395, Cp = 1.005 KJ/Kg0K, Cv= 0.72 KJ/Kg0K,

and R = 0.285 kJ/kg0K.

5. Apply SFEE to boiler, turbine, compressor and condenser. GROUP: - 3

1. Define thermodynamics equilibrium, types and explain zeroth law of thermodynamics. 2. Define 1] heat engine 2] heat source 3] refrigerator 4] heat reservoir 3. Explain first law of thermodynamics with help of joule’s experiment.

4. A heat engine takes10000 kJ/hr. heat energy from source of temperature 327℃ and rejects 5000 kJ/hr

heat into sink of 27℃ temperature. Find out its thermal efficiency and decide whether this heat engine is reversible one or irreversible one.

5. Derive general energy equation for first law of thermodynamics.

CONTINUOUS ASSESSMENT SCHME

Sr.

no.

Criteria to be Assessed Below

Expectations (1)

Meets

Expectations (3)

Exceeds

Expectations (5)

1. Timely submission

2. Organization and style ( neatness,

clarity, writing and drawing skill)

3. Quality of content.( grammar error,

content connection to course)

4. Data analysis and its solution.

Total (Out of 20)

Date:- __________________ Sign. of faculty:-

ASSIGNEMT – 2

CO2: Apply Gas law to mixtures.




UNIT:- 3


GROUP: - 1

1. Define Cv & Cp. Derive relation between Cp & Cv.

2. Write and explain Boyle’s law with neat sketch.

3. Explain characteristics of gas constant (R).

4. Define ideal gas, real gas.

5. If molecular mass of N=14 & O=16 then find value of characteristics gas constant R for NO2 gas.

GROUP: - 2

1. Define [1] Boyle’s law [2] Gay Lussac’s law

2. Write Value of R, Cp, Cv & Y for air ( S.I. Unit & M.K.S. unit )

3. Explain universal gas constant (Ru).

4. Define [1] Reunault’s law.[2] Avogadro’s law

5. If a gas has temperature, pressure & volume are 3500C, 15 bar & 24.5 m3 respectively. Find its

characteristic gas constant if its mass is 20 kg

GROUP: - 3

1. Write and explain Charle’s law for gas.

2. Derive characteristic equation for ideal gas.

3. Define [1] Specific heat at constant volume [2] Specific heat constant pressure

4. Derive Cp – Cv = R with usual notations.

5. Ideal gas specific heats of CO2 at constant pressure & at constant volume are 0.846 kJ/kg0K &

0.657 kJ/kg0K. Find its gas characteristic constant R & ratio of specific heats.


Sr.

no

Criteria to be Assessed

Below

Expectations (1)

Meets

Expectations (3)

Exceeds

Expectations (5)







Total (Out of 20)

Date:- __________________ Sign. of faculty:-

ASSIGNEMT – 3

CO3: Compute the problems on different thermodynamics processes and cycles by

plotting them on P-V and T-S diagrams.




UNIT:- 3 & 5


GROUP: - 1 1. Difference between process & cycle. Classify thermodynamics cycle. 2. Draw the diesel cycle on P–V and T-S diagram and write the equation of air standard efficiency of

diesel cycle.

3. Derive expression for work done during isentropic process. 4. One kg air is at 12 bar absolute pressure and temperature 900OC. It is expanded up to 2.5 bar absolute

pressure by isentropic process. Find (1) Final Volume (2) Final temperature (3) Work done Take R =

0.287 kJ/kg K , γ = 1.4

5. In one Otto cycle engine compression ratio is 12 & pressure and temperature at staring of compression process are 1 bar ab. & 27 OC respectively. If maximum temperature of the cycle is 1200 OC. Find air standard efficiency, work done, heat supply & thermal efficiency. If γ = 1.4.

GROUP: - 2

1. Explain diesel cycle. Derive air standard efficiency of diesel cycle. 2. Draw the otto cycle on P–V and T-S diagram and explain its processes. 3. Explain reversed Brayton cycle with P-V and T-S diagram. 4. One gas turbine works on Brayton cycle between 5 bar and 1 bar pressure. Find air standard

efficiency. Take γ = 1.4.

5. Air has initial volume 0.6 m3, pressure 60 N/cm2 and temperature 90 OC. It is expanded isothermally up to pressure 15 N/cm2. Find work done and change in internal energy and mass.

Take R= 0.287 KJ/Kg K.

GROUP: - 3

1. Derive air standard. Derive air standard efficiency of Otto cycle. 2. Differentiate Otto cycle and Diesel cycle. 3. Derive equation of work and heat for Isothermal process. 4. A Compression Ignition Engine working between 27 °C and 727 °C. Compression ratio of one diesel

cycle is 15. Pressure at starting of compression is 9.81 N/cm2 .What could be the maximum efficiency

of the cycle?

5. One kg of gas enclosed in a closed vessel has absolute pressure 2 bar and temperature 270C. If it is compressed up to 5 bar pressure, find [1] final temperature [2] change in internal energy.

Take Cp = 1.005 KJ/Kg K and R = 0.297 KJ/KgK.


Sr. no

Criteria to be Assessed

Below

Expectations

(1)

Meets

Expectations

(3)

Exceeds

Expectations

(5)







Total (Out of 20)

Date: - __________________ Sign. of faculty:-___

Sr.

No. TITLE DATE

PAGE

NO.

ALLO

TED

MAR

KS

OBTA

INED

MAR

KS

SIGN

ASSIGNMENTS

1 Assignment 1 based on CO1 (Explain the

effect of fluid properties on a flow system.) 10

2

Assignment 2 based on CO2 (Select

pressure measuring devices with the

reference to its applications.)

10

3

Assignment 3 based on CO3 (Compute

total energy and discharge using flow

measuring devices)

40

4

Assignment 4 based on CO4 (Select

appropriate hydraulic and pneumatic

devices as per applications.)

30

5

Assignment 5 based on CO5 (Interpret

types of flow in pipe considering friction

and water hammer effects.)

10

Total marks in Term work out of

200

Total marks in Term work out of

20

Total marks in Assignment out of

100 Total marks in Assignment out of

10

Total Marks out of 30

CO1: Explain the effect of fluid properties on a flow system.

1. Define following properties of fluid and give the unit of each property.

(i) Dynamic viscosity (ii) kinematic viscosity (iii)Density (iv) Specific volume

(v)Surface tension (vi)Bulk modulus(vii)Specific density.

2. Find kinematic viscosity of a liquid having density=950kg/m3 , shear stress =0.2N/m2 &

velocity gradient=0.2(sec)-1.

3. A liquid possess specific gravity=1.1,pressure head =3.0 meter. Convert it into kilopascal.

4. 1 m3 = .......... litre (b)1 stoke =........ cm2 /s.

5. What is cohesion and Adhesion.

6. As temperature increase ,viscosity of liquid ______and for gas______.

7. SI Unit of following properties. (I) Bulk modulus of elasticity (II) Surface tension

8. Explain Newton’s law of viscosity.

9. (1) 1 bar = _____N/m2 (2) 760 mm of Hg = ________ Pa.

10. Definition of Ideal fluid and Real fluid.

11. Calculate the specific weight & Density of one liter of a liquid which weights

7 N.

CONTINEOUS ASSESMENT SCHEME:-

Sr.

No. Criteria to be Assessed

Below

Expectations

(1)

Meets

Expectations

(2-3)

Exceeds

Expectations

(4-5)

1. Regularity & Timely Submission

2. Writing & Drawing skill

Total (Out of 10)

Date:-____________________

Sign. of faculty____________________

ASSIGNMENT:1

CO2: Select pressure measuring devices with the reference to its applications.

1. Enlist the different mechanical gauges.

2. Draw sketch of differential manometer & write equation to find pressure.

3. State & prove Pascal’s Law.

4. A simple u-tube mercury manometer is used to measure pressure of oil having specific

gravity =0.9 Level of oil in left end of manometer is 20cm below centre line and level of

mercury is 50cm above centre line in right end, which is opened to atmosphere. Find pressure

of oil in bar.

5. State limitation of Pizometer.

6. Give the relation between Absolute pressure ,Gauge pressure and Atmospheric pressure.


Sr.


Below

Expectations

(1)

Meets

Expectations

(2-3)

Exceeds

Expectations

(4-5)



Total (Out of 10)

Date:-____________________

Sign. of faculty____________________

ASSIGNMENT:2

CO3: Compute total energy and discharge using flow measuring devices.

1. Write (i) Continuity equation (ii) Momentum equation.

2. One pipe having dia.=30cm at section 1-1 & dia.=40cm at section 2-2.

If velocity of water at section 1-1 is 5m/sec find (i) rate of water discharge (ii) velocity of water

at section 2-2.

3. Water is flowing at the rate of 4000lit/min. from a 20cm diameter pipe. It exerts 20kN/m2 of

pressure at some point. Find total energy of water at 5 meter below from this point.

4. Water is flowing from horizontal venturimeter having inlet diameter = 30cm & throat

diameter = 15cm. Piezometer reading at inlet & throat are 80cm & 40 cm respectively. If

cd=0.98 then calculate water flow rate in liter/sec.

5. Water is flowing over rectangular notch having breadth=50cm, head =40cm & Cd =0.65.

Calculate discharge of water in liter/sec.

6. Drive Bernoulli’s equation from Euler’s equation.

7. A pipe having diameter of 30cm at point ‘A’ and 40cm at point ‘B’. Point ‘A’ and ‘B’ are at

3 meter and 7 meter up from the datum respectively. Flow rate through pipe is 0.7 m3/sec. If

pressure at point ‘A’ is 5 meter of water, find the pressure at point ‘B’.

8. Water flows through a triangular notch of 1200, under a head of 50cm. Calculate discharge

in litre/sec, if coefficient of discharge is 0.6.

9. Derive an expression for measuring disharge through venturimeter.

10. A horizontal venturimeter 20cm X 10cm is use to measure flow of oil of specific gravity 0.8.

Rate of flow of oil is 0.75m3/sec. If venture meter constant is 0.98, find deflection of oil -

mercury manometer.

11. Discharge through Rectangular Notch is 48 m3/min. When head of water is one third of

length of notch, calculate length of Notch. Take Cd = 0.62.

12. A horizontal Venturimeter is use for measuring discharge of water, whose inlet and throat

diameters are 30 cm and 15 cm respectively. The reading of differential manometer connected

between inlet and throat is 12 cm of mercury. If the Co-efficient of Venturimeter is 0.98, find

the discharge.

13. Water flow with 300 liter/sec in a pipe. The diameter of pipe is 500 mm and pressure is 900

kPa. If the centre line of pipe is at 200 m from the base, find the total energy.

14. Assumptions of Bernoulli’s Equation.

15. Explain Orifice meter with sketch.

ASSIGNMENT:3

16. Water flow with 30 cm head through rectangle notch having 60 cm length than find out

discharge in lit/sec if Cd = 0.65.


Sr.


Below

Expectations

(1-8)

Meets

Expectations

(9-15)

Exceeds

Expectations

(15-20)



Total (Out of 40)

Date:-____________________

Sign. of faculty____________________

CO4: Select appropriate hydraulic and pneumatic devices as per applications.

1. Write classification of pump.

2. List factors to be considered during selection of pump.

3. List applications of Hydraulic mainfold used in hydraulic system.

4. List names of pipe line fittings used in pneumatic system.

5. Write application of Pneumatics in Hand tools.

6. Draw any four symbols with name and component used in pneumatic system.

7. Explain fluid coupling with sketch.

8. Explain the construction and working of Pelton wheel.

9. Discuss the important of specific speed of a turbine. Find the specific speed and state types of

turbine, if head is 25 meter and the speed is 150rpm and the power is 7.5MW.

10. Explain the working of the following Hydraulic machines with neat sketch.

(i) Hydraulic accumulator (ii) Hydraulic press.

11. Draw symbols used in pneumatic circuit.

(i)Electric motor (ii) Hydraulic pump (iii) Hydraulic motor (iv) Double acting cylinder (v)

Manual shut off valve (vi)Fixed displacement Air compressor (vii)Elbow Tee, cross-section.

12. Write the purpose of Air vessel in reciprocating pump.

13. Difference between Impulse Turbine and Reaction Turbine.

14. Find the specific speed of turbine and type of turbine, if head is 50 m and turbine

discharge 10 m3/s which running at 350 rpm. Take efficiency is 85%.

15. Describe Centrifugal Pump with neat sketch.

16. Give the difference between Centrifugal Pump and Reciprocating Pump

ASSIGNMENT:4


Sr.


Below

Expectations

(1-5)

Meets

Expectations

(6-10)

Exceeds

Expectations

(11-15)



Total (Out of 30)

Date:-____________________

Sign. of faculty____________________

CO5: Interpret types of flow in pipe considering friction and water hammer effects.

1. Write causes & prevention of water hammer effect.

2. Water is flowing through 150 mm dia & 500 meter length pipe at the velocity= 2 m/sec. If

friction factor f=0.005 find head lost through friction.

3. Explain Reynold’s experiment.

4. Write advantage of Moody’s chart.

5. Water is flowing through a pipe of 150 mm diameter and 400 m length. If discharge is 35.4

lit/sec, calculate head loss due to friction. Take f = 0.01.

6. Usefulness of surge tank to prevent water hammer with sketch.


Sr.


Below

Expectations

(1)

Meets

Expectations

(2-3)

Exceeds

Expectations

(4-5)



Total (Out of 10)

Date:-____________________

Sign. of faculty____________________

ASSIGNMENT:5

R.C.TECHNICAL INSTITUTE SOLA AHMEDABAD


Subject: Human Resource Management

Each Assignment will be evaluated based on timely submission (5 Marks) and Quality of work (10 Marks).

ASSIGNMENT-1 (CO-1)

1. List qualities of Good Supervisor. (R)

2. Summarize the impact of human factor on productivity. (U)

3. Explain the scope of Human resource management. (U)

4. List the Function of Human resources management. (R)

5. Explain the term „job satisfaction‟? (U)

ASSIGNMENT-2 (CO-2)

1. Explain the primary needs of human being?(U)

2. Describe the role of group in organization. (R)

3. Write in brief about the need of self-actualization (R)

4. Summarize the importance of Maslow‟s need hierarchy in managing the human resources.

(U)

5. Explain the need of human relations and human values in interdepartment and

intradepartment. (U)

ASSIGNMENT-3 (CO-3)

1. Explain brainstorming. (U)

2. Write short notes on “Joheri window”. (R)

3. Explain the group dynamics in brief with different types of group. (U)

4. Apply the methods of improving interpersonal competence in group of student for project

work. (A)

5. List the qualities of good leader. (R)

6. State the barriers to change process. (R)

7. Explain interpersonal competence. (U)

8. Demonstrate the stages of group formation in political party. (A)

9. Classify the types of group. (A)

ASSIGNMENT-4 (CO-4)

1. Name the types of trainings. (R)

2. Examine the need of counselling in organization by observing the work culture of an

organization. (A)

3. Describe the process of Decision making. (R)

4. Explain the Power influence and compliance. (U)

R.C.TECHNICAL INSTITUTE SOLA AHMEDABAD


Subject: Human Resource Management

Each Assignment will be evaluated based on timely submission (5 Marks) and Quality of work (10 Marks).

5. Explain the role of motivator in organization (U)

6. Apply the Hersey and Blenchard‟s situational theory to manage maintenance department

where the degree of readiness of workers is different. (A)

7. Prepare a check list to identify the need of motivation in an organization (A)

ASSIGNMENT-5 (CO-5)

1. Explain characteristics of stress. (U)

2. Give examples of conflict in industry or organization due to economic cause observed by

you. (U)

3. State the need for the change. (R)

4. Explain the concept of stress management? (U)

5. Explain the strategies to manage change. (U)

6. Prepare a list of symptoms to identify the person under stress. (A)

7. Classify the causes of conflicts in business or organization (A)

(code: 3331901) semester iii€¦ · give their causes & remedies 5 explain centrifugal casting...

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