Explore topic-wise MCQs in Automobile Engineering.

This section includes 315 Mcqs, each offering curated multiple-choice questions to sharpen your Automobile Engineering knowledge and support exam preparation. Choose a topic below to get started.

301.

The number of revolutions per km for a free rolling tyre are less than that calculated from its static radius. This difference in number of revolutions is due to

A. forces in the contact area that cause slight forward of the tread
B. hysteresis of the tyre materials which make the dynamic loaded radius somewhat larger than the static radius
C. either of (A) and (B) above
D. none of the above
E. None of the above
Answer» D. none of the above
Discussion
302.

The purpose of the dynamo in an automobile is to

A. Act as a reservoir of electrical energy
B. Continually recharge the battery
C. Convert mechanical energy into electrical energy
D. Partly convert engine power into electric power
E. Supply electric power
Answer» C. Convert mechanical energy into electrical energy
Discussion
303.

The frame provided for supporting the units of chasis and the body, in case of Tata vehicles is

A. Cross member - type frame
B. Centre beam frame
C. Y-shaped tube frame
D. Self-supporting structure
E. Any of the above
Answer» B. Centre beam frame
Discussion
304.

Highest useful compression ratio is an indicator of

A. knocking of a fuel at a particular pressure
B. knocking of a fuel at a particular temperature
C. knocking of a fuel in a particular engine
D. knocking of a fuel under specified conditions in a standard engine
E. None of the above
Answer» E. None of the above
Discussion
305.

Wax is applied on car body because

A. It is water repellent
B. It seals off the pores
C. The surface shines
D. Any of the above
E. None of the above
Answer» E. None of the above
Discussion
306.

In a vehicle if there is no king pin offset

A. Starting steering effort will be high
B. Starting steering effort will be zero
C. Wobbling of wheels will increase
D. bracking effort will be high
E. None of the above
Answer» B. Starting steering effort will be zero
Discussion
307.

Starting motor current may be around

A. 0.1 A
B. 25 A
C. A
D. 0.5 A
E. 35 A
Answer» C. A
Discussion
308.

The part of the vehicle which holds the passengers and the cargo to be transported, is known as

A. Senan
B. Chassis
C. Hull
D. Cabin
E. Aft
Answer» D. Cabin
Discussion
309.

Fuel pump for diesel engine is

A. electrically operated
B. mechanically operated
C. pneumatically operated
D. electro-magnetically operated
E. None of the above
Answer» C. pneumatically operated
Discussion
310.

The process of super charging is meant for

A. raising exhaust pressure
B. increasing density of intake air
C. providing air for cooling
D. none of the above
E. An instrument for smoke analysis
Answer» C. providing air for cooling
Discussion
311.

Which one of the following is not a part of the hydraulic braking system?

A. Wheel cylinder
B. Steering mechanism
C. Brade shope
D. Master cylinder
E. Brake pedal
Answer» C. Brade shope
Discussion
312.

Synthetic rubber is made of

A. Coal
B. Butadiene
C. Mineral oil
D. Crude oil
E. Starch
Answer» C. Mineral oil
Discussion
313.

A ring gear is provided around the engine fly-wheel

A. For getting uniform speed
B. To start the engine using self-starter
C. For reducing noise
D. To get variable engine speeds
E. To operate the valves
Answer» C. For reducing noise
Discussion
314.

In a four stroke engine, for the combustion of one litre of fuel, the volume of air required would be approximately

A. 1 cu-m
B. 5 - 7 cu-m
C. 15 - 16 cu-m
D. 2 cu-m
E. 9 - 10 cu-m
Answer» F.
Discussion
315.

The gear ratio in the differential unit of a passenger car is of the order of

A. 3 ; 1
B. 6 ; 1
C. 2 ; 1
D. 8 ; 1
E. 10 ; 1
Answer» B. 6 ; 1
Discussion