Automobile Engineering Practice Set-1

1. The painting of automobiles is done to

Prevent rust from growing on the body

Improve its external appearance

Retain the characteristics of steel for long

All of these

2. In a square type engine

Diameter and length of piston are same

Stroke length and cylinder bore are same

Geometrical shape is square

Two cylinders are placed horizontal and two vertical

3. The braking control type traction control system (TCS) generally operates in the speed range of

More than 60 kmph

Less than 60 kmph

Less than 40 kmph

Less than 20 kmph

4. It is necessary to maintain the valve clearances as they

Make the crankshaft turn smoothly

Increase the speed at which the valves move up and down

Allow for lengthening of the valves owing to the heat of combustion

Reduce the resistance to sliding that occurs between the cam and the tappet

5. The path taken by intake air is

Air cleaner intake manifold carburettor (or throttle body) intake ports cylinders

Air cleaner carburettor (or throttle body) intake manifold intake ports cylinders

Air cleaner carburettor (or throttle body) intake ports intake manifold cylinders

Carburettor (or throttle body) air cleaner intake manifold intake ports cylinders

6. When the brake pedal free play is less than the specified value, then the

Brake fades

Brake drags

Vapour locking occurs in the brake lines

Antilock braking system malfunctions

7. The calorific value of petrol is about

36.5-38.5 MJ/kg

39.4-42.5 MJ/kg

42.7-43.5 MJ/kg

45.5-47 MJ/kg

8. The function of a first compression ring (top ring) is that it

Creates swirl

Increases the combustion temperature

Maintains a seal and prevents the fuel leakage

Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber

9. The air resistance to a car at 20 kmph is R. The air resistance at 40 kmph will be

4R

2R

4R²

R

10. The capacity of a battery is usually expressed in terms of

Amperes

Weight

Volts

Ampere hours

Automobile Engineering Practice Set-1

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