Assistant Motor Vehicle Inspector part 4

Subject: AUTOMOBILE ENGINEERING

(Question from 01 to 30)

1. Pipes for bicycle frames are made of

cold rolled steel.

2. Eutectoid steel contains following percentage of carbon

0.8%.

3. In which of the following cases, consideration of creep is important?

gas turbine blades.

4. Idler pulley is used

for applying tension.

5. The unit of length in S.I. unit is

Meter.

6. A closed system is one in which

mass does not cross boundaries of the system, though energy may do so.

7. According to first law of thermodynamics

total energy of a system remains constant.

8. Thermal power plant works on

Rankine cycle.

9. Rotameter is a device used to measure

Flow.

10. For pipes, laminar flow occurs when Reynold’s number is

less than 2000.

11. Cavitation is caused by

low pressure.

12. An imbalanced wheel during vehicle operation

Bounces vertically or deflects from side to side (as seen from front or rear).

13. The parking brakes employed in vehicles are operated

Mechanically.

14. The connecting rod is attached to the piston by the

Piston pin.

15. In a Diesel engine, the function of a fuel injector is to

Spray atomized fuel in the cylinder.

16. The cam shaft in an engine is always mounted

Parallel to the crankshaft.

17. The basic function of the suspension is to

Absorbs vibration and impact forces from the road surface.

18. The locus of a point on a thread unwound from a cylinder will be

Involute.

19. A cam with a roller follower would constitute following type of pair

higher pair.

20. The property of a material which enables it to resist fracture due to high impact loads is known as

Toughness.

21. Resilience of a material is important, when it is subjected to

shock loading.

22. Recrystallization temperature is one

at which new spherical crystals first begin to form from the old deformed one when a strained metal is heated.

23. The crystal structure of gamma iron is

Face Centred Cubic (FCC).

24. A tool used to withdraw a drill from the sleeve is called

Drift.

25. In a welding, flux is prepared in the form of a coarse powder and granulated flux is spread over the joint. What is this type of welding process called?

Submerged arc welding.

26. The type of tool used on milling machine and broaching machine is

Multi-point cutting tool.

27. In third angle projection method, the object is supposed to be in

Third quadrant.

28. This is the bottom surface joining the sides of two adjacent threads is

Root.

29. The ratio of limiting friction and normal reaction is known as

coefficient of friction.

30. Tangent of angle of friction is equal to.

coefficient of friction.