Mechanical Engineering Multiple Choice Questions and Answers

51. The process of sublimation is found to occur in

1. Liquid N2
2. Solid CO₂
3. Solid 0₂
4. Air

52. The processes of Carrot cycle are

1. Two adiabatic and two constant volume
2. Two constant pressure and two constant volume
3. Two isothermal and two adiabatic
4. Two isothermal and two isentropic

53. The product of mass and acceleration due to gravity of the body is called.

1. Pressure
2. Force
3. Weight
4. None of this

54. The specific heat at constant pressure(C_p) of an ideal gas is

1. Equal to its specific heat at constant pressure
2. C_p < C_v
3. C_p>C_v
4. C_p = 2 C_v

55. The statement that when any two bodies are in thermal equilibrium with third, they art also in thermal equilibrium with each other is

1. First law of thermodynamic
2. Zeroth law of thermodynamics
3. Second law of thermodynamic
4. None of these

56. The Steam generate in case of water tube boiler as compared to fire tube boiler is

1. Same
2. less
3. More
4. None of above

57. The strainer is used in all types of pumps for

1. Filtering the liquids to be sucked
2. To protect pump, foreign material passes through the pump.
3. Both a and b
4. None of this

58. The sum of internal energy (U) and the product of pressure and volume (p.v) is known as

1. work done
2. entropy
3. enthalpy
4. none of these

59. The thickness Of gear tooth is measured

1. Along the pitch circle
2. Along the base circle
3. Along the addendum circle
4. Along the root circle

60. The unit for pressure in S.I. units is

1. Kg/cm
2. I b/in2
3. Pascal
4. None of this