11. The battery is an electrochemical device, which means battery
(A) Makes chemicals by mechanical means
(B) Uses chemical action to provide electricity
(C) Has curved plates instead of flat plates
(D) Does not use an electrolyte
Answer: - Uses chemical action to provide electricity
12. An over-inflated tyre will wear the tread most near the
(A) Edges
(B) Corners
(C) Centre
(D) None of these
Answer: - Centre
13. Two advantages of using helical gears rather than spur gears in a transmission system are
(A) Strength and cost
(B) Strength and less end thrust
(C) Noise level and strength
(D) Noise level and economy
Answer: - Noise level and strength
014. The temperature at which tyre inflation pressure should be checked is
(A) 20°C
(B) 25°C
(C) 35°C
(D) Ambient temperature
Answer: - Ambient temperature
15. In vehicles with tilt steering, the steering column is pivoted in
(A) Upper bracket
(B) Lower bracket
(C) Tilt bracket
(D) Steering yoke joint
Answer: - Lower bracket
16. One effect of detonation is
(A) Delay in ignition
(B) Loss of power
(C) Overheating of engine
(D) Overcooling of engine
Answer: - Loss of power
17. The effect of vapour locking on the brake performance is that the
(A) Brakes function more effectively
(C) Brake operation is delayed after depression of the brake pedal
(D) Vapour locking has no effect on brake performance
Answer: - Brakes fail completely
18. Clutch facings are usually attached to the plate by
(A) Steel rivets
(B) Brass rivets
(C) Aluminium screws
(D) Steel screws
Answer: - Brass rivets
19. 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
Answer: - Positive camber
20. 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
Answer: - To vary the torque at the wheels
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