Mechanical Engineering Quiz | Mechanical Engineering Online Test for Practice

31. Petroleum is

1. None of this
2. Solid fuel
3. Liquid fuel
4. Secondary fuel

32. Pump is a machine which is used to do

1. none of the above
2. lift liquid from low height to higher elevation
3. To store liquid
4. To compress liquid

33. Reducing pressure angle on gears results in

1. High efficiency
2. Weaker teeth
3. Stronger teeth
4. High velocity ratio

34. Saturation temperature of steam increase

1. none of the above
2. With decrease in pressure
3. with increase in pressure
4. is unaffected by pressure

35. Specific heat is defined as the amount of heat required

1. None of this
2. To raise unit of temp of a substance
3. To raise unit mass of substance through unit degree of temperature
4. To raise unit mass of substance through 100 C

36. The ability of a material to resist fracture due to high impact loads is called

1. brittleness
2. strength
3. stiffness
4. toughness

37. The air standard cycle on which the petrol engine work is

1. Dual cycle
2. Otto cycle
3. Carrot cycle
4. Joule cycle

38. The cam shaft speed of four stroke engine is

1. Half of crank shaft speed
2. Double than crank shaft speed
3. Four times of crank shaft speed
4. Equal to crank shaft speed

39. The clearance volume in a compressor is provided

1. To accommodate valves in the cylinder
2. To increase volumetric efficiency
3. to reduce the work input
4. So that piston does no strike the cylinder head

40. The clutch ordinarily remains in disengaged condition when it is used for power transmission in:

1. Elevator
2. Automobile
3. Machine tools
4. Crane

41. The compression ratio for the diesel engine is approximately in the following range

1. 10:1 to 12:1
2. 5:1 to 10:1
3. 11:1 to 20:1
4. 12:1 to 15:1

42. The correct location of economizer is :

1. near the superheater
2. Between furnace and preheater
3. between forced draft fan and furnace
4. between airpreheater and chimney

43. The following is the one of the characteristics of I.C. engine

1. More efficient
2. Large in size
3. Cheaper fuel may be used
4. Starting is difficult

44. The function of boiler is

1. To blow out hot gases.
2. To compressed steam
3. To generate steam at a desired pressure
4. To heat feed water

45. The function of ozone layer is

1. none of the above
2. protects the earth from harmful effect of ultraviolet rays
3. increase the temperature of earth
4. increases CO2 in atmosphere