Mechanical Engineering MCQ Questions and Answers Quiz

21. If xl and x2 are the dryness fractions obtained in separating calorimeter and throttling calorimeter respectively, then actual dryness fraction of steam is

  1. XI - X2
  2. XI + X2 /2
  3. X1 + X2
  4. X1 * X2

22. In a IC engine from which of the following source energy is converted into mechanical energy

  1. Chemical energy of fuel.
  2. potential energy
  3. kinetic energy
  4. All of the above

23. In a simple gear train having two gears, if driving gear rotates in clockwise direction then driven gear rotates in

  1. Clockwise direction
  2. Anti clockwise direction
  3. Depend on size of gear
  4. depend on no. of teeth

24. In a two stroke cycle engine, one cycle is completed in the following number of revolutions of the crank shaft

  1. 2
  2. 3
  3. 1
  4. 4

25. In diesel cycle, heat is added at

  1. constant temperature
  2. constant enthalpy
  3. constant volume
  4. constant pressure

26. In Following which is the power producing device?

  1. Pump
  2. I.C. Engine
  3. Compressor
  4. Air Conditioner

27. In multi stage compression as compared to single stage compression the volumetric efficiency is

  1. more
  2. less
  3. Constant
  4. None of the above

28. In S.I. unit for the force is.

  1. Kgm
  2. Kgf
  3. Newton
  4. Lb

29. In the Polytropic Process PVn= C, if n = infinity , the process is called

  1. isochoric
  2. isobaric
  3. isothermal
  4. adiabatic

30. Main disadvantage of nuclear energy is

  1. High operating cost
  2. Low efficiency
  3. Waste disposal
  4. All of above
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MCQ Multiple Choice Questions and Answers on Mechanical Engineering

Mechanical Engineering Question and Answer