Automobile Engineering problems
- 1. The anti-knock property of compression ignition engine fuel can be improved by adding
Options- A. tetraethyl lead
- B. trimethyl pentane
- C. amyl nitrate
- D. hexadecane Discuss
Correct Answer: amyl nitrate
- 2. The driveshafts are connected to the differential and wheel hubs through universal joints because the universal joints
Options- A. absorb the vibrations transferred from the surface of the road
- B. compensate for variations in the relative positions of the differential and the wheels which result from bumpy road surfaces or other similar driving conditions.
- C. absorb any difference in speed between the left and right wheels when the vehicle is turning
- D. none of the above Discuss
Correct Answer: compensate for variations in the relative positions of the differential and the wheels which result from bumpy road surfaces or other similar driving conditions.
- 3. When the brake pedal free play is less than the specified value, then the
Options- A. brake drags
- B. brake fades
- C. vapour locking occurs in the brake lines
- D. antilock braking system malfunctions Discuss
Correct Answer: brake drags
- 4. A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it
Options- 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 kick-back for large steering angles Discuss
Correct Answer: improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion
- 5. The calorific value of petrol is about
Options- A. 36.5 - 38.5 MJ/kg
- B. 39.4 - 42.5 MJ/kg
- C. 42.7 - 43.5 MJ/kg
- D. 45.5 - 47 MJ/kg Discuss
Correct Answer: 42.7 - 43.5 MJ/kg
- 6. The painting of automobiles is done to
Options- A. prevent rust from growing on the body
- B. improve its external appearance
- C. retain the characteristics of steel for long
- D. all of these Discuss
Correct Answer: all of these
- 7. The differential ensures that each wheel is driven at a speed which corresponds to the distance it must travel around a corner, and it consequently prevents against excessive tyre wear.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 8. The braking control type traction control system (TCS) generally operates in the speed range of
Options- A. less than 20 kmph
- B. less than 40 kmph
- C. less than 60 kmph
- D. more than 60 kmph Discuss
Correct Answer: less than 40 kmph
- 9. The calorific value of Diesel is about
Options- A. 36.5 MJ/kg
- B. 38.5 MJ/kg
- C. 42.5 MJ/kg
- D. 45.5 MJ/kg Discuss
Correct Answer: 42.5 MJ/kg
- 10. The piston compression rings are made of
Options- A. cast iron
- B. steel
- C. aluminium
- D. bronze Discuss
Correct Answer: cast iron
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