Mechanical Engineering MCQ Questions and Answers Quiz

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

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

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

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

43. The correct location of economizer is :

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

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

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

45. The function of boiler is

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

46. The function of ozone layer is

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

47. The function of steam stop valve is

  1. TO regulate flow Of steam from boiler to steam pipe
  2. TO separate steam from water
  3. TO collect steam from drum
  4. TO provide safety of boiler

48. The main function Of an automobile gearbox is

  1. to reduce speed
  2. to increase speed
  3. to provide variable speeds
  4. to increase power

49. The moving part of a centrifugal pump is called a

  1. Impeller
  2. Volute
  3. Diffuser
  4. Suction nozzle

50. The process of sublimation is found to occur in

  1. Liquid N2
  2. Solid CO2
  3. Solid 02
  4. Air
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MCQ Multiple Choice Questions and Answers on Mechanical Engineering

Mechanical Engineering Question and Answer