Automobile Engineering Interview Questions - Answers

Interview Questions and Answers -

Hello Students Here we will find automobile interview question answer, i hope it will give you benefits during your interview.

1.What is actual power delivered by the engine known as?

Ans- Answer: C

a) Shaft power

b) Horse - power

c) Brake power

d) None of the mentioned

2. If ‘T’ is torque (in Nm) and ‘N’ is speed (in rpm) then the required expression for Brake power ‘B.P’ in kW s is-

Ans- b

a) 2πNT/6000

b) 2πNT/60000

c) πNT/6000

d) πNT/60000

3. The torque available at the contact between road and driving wheel is called

Ans- c

a) Brake power

b) Friction power

c) Tractive effort

d) Engine torque

4. If ‘V’ is vehicle speed (in metres/min) and ‘R’ is radius of driving wheel (in meters) then the rpm of the driving wheel is given by

Ans- a

a) rpm = V/2πR

b) rpm = 2πV/R

c) rpm = πR/V

d) rpm = πV/R

5. Which of these is not a power loss which takes place between engine and driving wheel

Ans- d

a) Power loss due to friction of piston bearings and gears

b) Power loss from clutch to drive wheel due to friction of various parts

c) Transmission line loss

d) None of the mentioned

6. The force that opposes the motion of a vehicle is

Ans- d

a) Rolling resistance

b) Gradient resistance

c) Wind or air resistance

d) All of the mentioned

7. Rolling resistance does not depend on which of the following factors

Ans- b

a) Load on each road wheel

b) Radius of driving wheel

c) Wheel inflation pressure

d) Nature of road surface

8. For an average type of road surface what percentage of vehicle’s weight constitutes rolling resistance

Ans- b

a) 5 to 10%

b) 1 to 2%

c) 2 to 5%

d) 0 to 3%

9. Wind or air resistance depends on which of the following factors

Ans- d

a) Shape and size of vehicle body

b) Air velocity

c) Speed of vehicle

d) All of the mentioned

10. If ‘k’ is coefficient of air resistance, ‘A’ is frontal area projected by the vehicle in square meters and ‘V’ is vehicle speed (in km/h) then the expression for air resistance ‘A.R’ on the vehicle is

Ans- a

a) A.R = k*A*V^2

b) A.R = k*A*V^3

c) A.R = 2k*A*V

d) A.R = k*A*V

11. The value of coefficient of air resistance for average cars is approximately equal to

Ans- c

a) 0.32

b) 0.032

c) 0.0032

d) 1.32

12. One Horse -Power (H.P) is approximately equal to _____ Watts.

Ans- d

a) 810

b) 545

c) 634

d) 746

13. Gradient resistance for a vehicle depends on which of the following factors

Ans- a

a) Weight of the vehicle

b) Size of the vehicle

c) Width of tyre

d) Speed of the vehicle

14. Power to weight ratio for high performance cars can range up-to

Ans- c

a) 150

b) 190

c) 230

d) 280

Thanks 

Best of luck

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