M12E02/D12E02 Automobile Engineering DME Question Paper Model : psgpolytech.ac.in

College : Psg Polytechnic College
Degree : DME (Diploma in Mechanical Engineering)
Semester : V Sem
Subject : M12E02/D12E02 Automobile Engineering
Document Type : Model Question Paper
Website : psgpolytech.ac.in

Download Model/ Sample Question Papers :
https://www.pdfquestion.in/uploads/psgpolytech.ac.in/6231-M12E02.pdf

PSG Polytechnic Automobile Engineering Question Paper

PSG POLYTECHNIC COLLEGE, COIMBATORE – 641 004
DIPLOMA SEMESTER EXAMINATIONS – MODEL QUESTION PAPER
Instructions :

Related : PSG Polytechnic College B12403 Production Technology DAE Question Paper Model : www.pdfquestion.in/6219.html

1. Group A and Group B questions should be answered in the Main Answer book.
2. Answer any TEN questions in Group A. Each question carries three marks.
3. Answer ALL questions either (a) subdivision or (b) subdivision in Group B. Each question carries 14 marks.

M12E02/D12E02 Machinery

Automobile Engineering
MODEL QUESTION PAPER
Time : 3 Hours Max.Marks: 100
Group – A Marks : 10 x 3 = 30
1. Sketch any 3 types of valve arrangements and name them.
2. Draw and explain a sub-frame.
3. Write the properties of a coolant.
4. Illustrate the principle of a clutch using a sketch.

5. State the reason for using torsion springs in clutch plates.
6. Where is a transfer gear box used- Explain its use.
7. Describe the function of a differential using a sketch.
8. Specify the purpose of using proportioning valve in a brake system.

9. Give the properties of automotive brake fluid.
10. What does the term ‘steering returnability’ &‘steering ratio’ mean-
11. With a sketch write the purpose of a helper spring

12. Draw a stabilizer bar and specify its use
13. Write the specification of a wheel and explain it.
14. Discuss the aspect ratio given in a tyre specification
15. Sketch any 3 types of abnormal tyre wear and specify its causes

Group– B Marks : 5 x 14 = 70
16. a)i]Name & locate the various parts mounted on a chassis with the help of a layout. (7)
ii] Draw the various cross sections of frames & name them. (7)
(OR)
b)i]Using a diagram explain any type of automotive cooling system. (7)
ii]With the help of a circuit diagram explain the ignition system. (7)

17.a)i]Explain the construction of a Cone clutch using a diagram. (7)
ii] Sketch and explain a diaphragm spring type, single plate clutch assembly. (7)
(OR)
b)i]Why and how is double declutching done? Explain. (7)
ii]Explain the working of a synchromesh gearbox using a diagram. (7)

18. a)i]Draw a constant velocity joint and explain its advantage over universal joints. (7)
ii] Compare between semi floating axle & fully floating axle. (7)
(OR)
b)i]How is bleeding of hydraulic brake system carried out? Explain. (7)
ii]With a diagram explain the working of a fixed caliper type disc brake. (7)

19. a)i]Explain the construction of arecirculating ball type steering gear box. (7)
ii] Compare between semi integral &integral type power steering system. (7)
(OR)
b)i]Explain an independent type, front suspension arrangement. (7)
ii] Using a layout diagram explain an Air suspension system. (7)

20.a)i]Name the parts & explain the working of a shock absorber, using a diagram. (7)
ii]Draw and explain the construction of a wire wheel. (7)
(OR)
b)i]Using a cross sectional diagram, explain the construction of a tubeless tyre. (7)
ii] With suitable sketches explain the construction of cross ply & radial ply tyres. (7)

Fluid Mechanics

Time : 3 Hours
Max.Marks : 100
Group – A Marks : 10 x 3 = 30
1. Define specific gravity and weight density of a fluid.
2. State Pascal’s law with its application.
3. What is a manometer- How are they classified-

4. State the difference between laminar and turbulent flow of fluid.
5. State Bernoulli’s theorem with its application.
6. Define the terms : i) Hydraulic gradient line and ii) Total energy line.

7. What is priming- Why is it necessary-
8. State the difference between centrifugal and reciprocating pumps.
9. Define cavitation. What are its effects-

10. How does a torque converter differ from fluid coupling-
11. What is a hydraulic system- What are the elements of hydraulic system-
12. Define the term hydraulic accumulator.

13. State the difference between hydraulic and pneumatic systems.
14. Draw the symbols of 3/2 DCV and 4/2 DCV.
15. List the merits and demerits of hydraulic system.