Automotive Engines MCQs

Automobile Engineering Objective Questions

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274. Aworm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

A. Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion

B. Allows the steering wheel to be turned by a greater amount when steering

C. Makes the steering more responsive

D. Reduces the amount of kickback for large steering angles

275. The function of a proportioning control valve (PCV) in a brake system is to

A. Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation

B. Reduce the brake fluid pressure when the brakes approach their lockup point

C. Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level

D. Cause less brake fluid pressureto act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level

276. What is the advantages of LPG as a motor fuel?

A. Complete vaporization

B. Closer control of air-fuel ratios

C. High antiknock valve

D. All are correct

277. The capacity of a battery is determined by the number of plates per cell and

A. Number of cells

B. Shape of plates

C. Size of plates

D. Number of separators

278. In a two-stroke cycle engine, the four processes in a cycle namely suction, compression, expansion and exhaust are completed in . . . . . . . . revolutions of crankshaft.

279. If a noise is present in a differential only when the car moves past a curve, the chances are that the trouble is due to some fault in

A. Drive pinion assembly

B. Differential case assembly

C. Wheel bearing

D. Driver assembly

280. The methods for starting diesel engines are-

A. Hand cranking

B. Starting by cartridge

C. Electric starter motor

D. All are correct

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