Mechanical Engineering Questions and Answers | Online Quiz for Practice

46. 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

47. 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

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

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

49. The process of sublimation is found to occur in

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

50. 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

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

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

52. 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

53. 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

54. 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

55. 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

56. 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

57. 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

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

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

59. The unit Nm/s is called

1. Joule(J)
2. Calorie(C)
3. Watt(W)
4. None of this

60. Water gas is

1. Mixture of hydrogen and carbon monoxide
2. It mainly consist of CH4
3. Used in heating ovens
4. None from above