JNTU Question Papers Automobile Engineering I Sem November 2008

JNTU Question Papers

Automobile Engineering I Sem November 2008

1. (a) Describe the following terms:

i. Vehicle

ii. Self-propelled vehicle

iii. Motor-Vehicle

iv. Automobile

(b) What are the different types of automobile vehicles, Explain. [12+4]


2. (a) Explain the working principle of rotary I.C. engine ? Name few story engines?

(b) Compare the ideal and actual valve timing diagrams of four stroke C.I. engine

and explain salient features. [8+8]


3. Discuss the functional and constructional details of the following components.

(a) Camshaft

(b) Crancshaft

(c) Connecting rod

(d) Cranc casing [16]


4. Write short notes on:

(a) Gudgeon Pin

(b) Inlet and exhaust manifolds

(c) Oil slump

(d) Valve gears. [4+4+4+4]


5. (a) What is meant by carburetor?

(b) Sketch a typical inductor system of a petrol engine.

(c) What are the factors which affect the process of carburetor? [4+8+4]


6. (a) Explain briefly the electronic fuel injection used in modern cars.

(b) What are the merits and demerits of electronic fuel injection system. [8+8]


7. Write short notes on:

(a) Delivery characteristics of fuel pump.

(b) Governing mechanism.

(c) Fuel clearing system.

(d) Pressure waves in plunger of a pump. [4+4+4+4]


8. (a) Explain the working of wet sump lubrication system with suitable diagram.

(b) What are the functions of oil sump used in lubrication system? Explain. [8+8]


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