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Scheme – E

Sample Question Paper

Course Name : Diploma in Mechanical Engineering

Course Code : ME/MH/MI

Semester : Fifth for ME /Sixth for MH/MI

Subject Title : Automobile Engineering (Elective –I)

Marks : 100 Time: 3 Hrs.

Instructions:

1. All questions are compulsory.

2. Illustrate your answers with neat sketches wherever necessary.

3. Figures to the right indicate full marks.

4. Assume suitable data if necessary.

5. Preferably, write the answers in sequential order.

Q.1 (a) Attempt any THREE of the following. 12 Marks

a) Name major component of automobile and state the function of any four

components.

b) State the two features of aerodynamic shape of car body to improve the

performance of vehicle.

c) Draw a layout of front engine rear wheel drive.

d) Write four battery ratings and explain the same.

Q.1 (b) Attempt any ONE of the following. 06 Marks

a) Draw the labeled sketch of the following and state its effect on vehicle. Camber

and castor, toe-in and toe out.

b) How the microprocessor controls various automobile operations? Mention for six

operations.

Q.2 Attempt any FOUR of the following. 16 Marks

a) Draw a labeled sketch of diaphragm clutch, and describe its working.

b) State the function of gear box. Define Traction and Tractive effort.

c) What is the function of universal joint and slip joint?

d) State and explain four factors which affects tyre life.

e) Write the four requirements of suspension system.

f) Name the type of steering gear box used in maruti 800. Draw its sketch.

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Q.3 Attempt any FOUR of the following. 16 Marks

a) What is the function of master cylinder and wheel cylinder in hydraulic braking

system?

b) State four requirements of steering system.

c) What is the significant of colour codes in automobile? State four colour codes.

d) Draw a labeled sketch of balancing coil type fuel gauge and describe its working.

e) Draw a sketch of indicator light circuit. Write its working.

Q.4 (a) Attempt any THREE of the following. 12 Marks

a) With a labeled sketch explain operating principle of an alternator.

b) Discuss automobile market in India for four wheelers.

c) Compare electronic ignition system with conventional ignition system. Give four

points.

d) Draw a cut section showing construction of battery. Label the components and state

their functions.

Q.4 (b) Attempt any ONE of the following. 06 Marks

a) Draw a labeled sketch of constant mesh gear box and describe its working.

b) What are the advantages of independent suspension system over rigid axle

suspension system? Draw a labeled sketch of Wishbone type independent

suspension system.

Q.5 Attempt any TWO of the following. 16 Marks

a) Distinguish between semi floating and fully floating rear axles (4 Points) and draw

Sketches of both the arrangements.

b) Draw a layout of complete air braking system and describe its working in detail.

c) Describe with labeled sketch the working of Bendix drive.

Q.6 Attempt any FOUR of the following. 16 Marks

a) What are the advantages & limitations of front engine & front wheel drive vehicles?

b) Draw a labeled sketch of differential. Why it is used in automobile transmission

system?

c) Why are the stub axels fitted in front axle? Sketch any two types of stub axles.

d) Compare tubed tyres with tubeless tyres.

e) Why wheel alignment and wheel balancing is necessary? Give the reason. State the

procedure for wheel balancing.