Automobile Engineering Objective Questions with Answers - Set 17 - ObjectiveBooks

Automobile Engineering Objective Questions with Answers - Set 17

Practice Test: Question Set - 17

1. An imbalance wheel during vehicle operation
    (A) Makes large noise when its heavy point hits the road surface
    (B) Deflects in the vehicle's longitudinal direction
    (C) Bounces vertically or deflects from side to side (as seen from front or rear)
    (D) Creates a standing wave

2. The temperature at which tyre inflation pressure should be checked is
    (A) 20°C
    (B) 25°C
    (C) 35°C
    (D) Ambient temperature

3. The parking brakes employed in vehicles are operated
    (A) Mechanically
    (B) Hydraulically
    (C) Pneumatically
    (D) None of these

4. In vehicles with tilt steering, the steering column is pivoted in
    (A) Upper bracket
    (B) Lower bracket
    (C) Tilt bracket
    (D) Steering yoke joint

5. One effect of detonation is
    (A) Delay in ignition
    (B) Loss of power
    (C) Overheating of engine
    (D) Overcooling of engine

6. In case of a Diesel car, the pressure at the end of compression is of the order of
    (A) 15 bar
    (B) 25 bar
    (C) 35 bar
    (D) 45 bar

7. The effect of vapour locking on the brake performance is that the
    (A) Brakes function more effectively
    (B) Brakes fail completely
    (C) Brake operation is delayed after depression of the brake pedal
    (D) Vapour locking has no effect on brake performance

8. The connecting rod is attached to the piston by the
    (A) Cap bolt
    (B) Piston pin
    (C) Cap roller bearing
    (D) Rod cap

9. Clutch facings are usually attached to the plate by
    (A) Steel rivets
    (B) Brass rivets
    (C) Aluminium screws
    (D) Steel screws

10. In a Diesel engine, the function of a fuel injector is to
    (A) Mix the fuel and air
    (B) Ignite the air-fuel mixture
    (C) Provide flame front for ignition
    (D) Spray atomized fuel in the cylinder

11. In a four speed four stroke Diesel engine, the intake valve
    (A) Opens at T.D.C. and closes at B.D.C.
    (B) Opens at 20° before T.D.C. and closes at 35° after B.D.C.
    (C) Opens at 10° after T.D.C. and closes at 20° before B.D.C.
    (D) None of the above

12. When the top of the wheel is tilted outward, then it is called
    (A) Positive camber
    (B) Negative camber
    (C) Positive caster
    (D) Negative caster

13. The purpose of transmission in an automobile is
    (A) To vary the speed of automobile
    (B) To vary the torque at the wheels
    (C) To vary the power of automobile
    (D) None of these

14. A basic difference between the spark ignition engine and the Diesel engine is that the
    (A) Diesel engine compresses air alone instead of an air-fuel mixture
    (B) Air temperature ignites the fuel in the Diesel engine
    (C) Fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke
    (D) All of the above

15. The cam shaft in an engine is always mounted
    (A) Parallel to the crankshaft
    (B) Perpendicular to the crankshaft
    (C) Inclined to the crankshaft
    (D) None of these

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