Mechanical Engineering MCQ Questions and Answers Quiz

11. Air vessel is used in

  1. Centrifugal Pump
  2. Vane pump
  3. Gear pump
  4. Single acting Reciprocating.

12. An isothermal process is governed by

  1. Boyles law
  2. Gay-Lussac law
  3. Charles law
  4. Avogadros law

13. CNG is an excellent for

  1. petrol engine
  2. Kerosene engine
  3. Diesel engine
  4. All of above

14. Cochran boiler is .

  1. Vertical boiler
  2. Natural circulation boiler
  3. Fire tube boiler
  4. All Of above

15. Compressor in which compression of air from suction pressure to delivery pressure takes place in more than one cylinder is called compressor.

  1. Single acting
  2. Double acting
  3. Single stage
  4. Multi stage

16. Compressor is a machine which is used to do

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

17. Dryness fraction of wet steam is

  1. greater than 1
  2. less than 1
  3. #NAME?

18. During adiabatic process

  1. heat transfer is zero
  2. enthalpy remains constant
  3. work transfer is zero
  4. enthalpy change is zero.

19. During compression process which parameter will change?

  1. Pressure
  2. Volume
  3. Density
  4. All Of above

20. For earth moving machines, widely used engines are:

  1. Petrol engine
  2. Steam engine
  3. Diesel engine
  4. Gas engine

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