Mechanical Engineering MCQs Quiz Multiple Choice Questions & Answers Page 2

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

61. What is the unit of luminous intensity is SI unit system?

1. Angstrom
2. Carat
3. Mol
4. Candela

62. When driving and driven shafts are at comparatively short distance apart & higher efficiency required, the type of drive suitable is :

1. Gear drive
2. Belt drive
3. friction drive
4. chain drive

63. When the axes of two shafts are parallel, use

1. Crossed helical gears
2. Bevel
3. Worm gears
4. Spur or helical gears

64. When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as

1. internally fired boiler
2. natural circulation boiler
3. externally fired boiler
4. forced circulation boiler

65. When the driving and driven shafts are at comparatively larger distance apart, the type Of drive suitably used is

1. Gear Drive
2. Belt Drive
3. Friction Drive
4. Chain Drive

66. Which application is not perform by Vernier caliper?

1. Measuring diameter
2. Measuring height
3. Measuring depth
4. None of above

67. Which are of the following is not a rotary pump?

1. Gear pump
2. Vane pump
3. Screw pump
4. Axial pump

68. Which of the following energy is converted into electricity in a Hydo power plant

1. Nuclear energy
2. Potential Energy of water
3. Thermal Energy
4. all of the above

69. Which of the following instrument is used for drawing curved lines

1. T- Square
2. French curves
3. Protractor
4. Compass

70. Which of the following instrument is used for measure speed / velocity?

1. Tachometer
2. Pitot Tube
3. Anemometer
4. All Of Above

71. Which of the following instrument is used to measure length

1. Vernier calliper
2. Manometer
3. Thermometer
4. none of the above

72. Which of the following instrument is used to measure temperature

1. Vernier calliper
2. Manometer
3. Thermometer
4. none of the above

73. Which of the following instrument is used to measure temperature?

1. Manometer
2. Rotameter
3. Thermocouple
4. Pilot tube

74. Which Of the following is a not power transmission element?

1. Belt
2. Rope
3. Chain
4. Brake

75. Which of the following is a unit of Electric current

1. Ampere
2. Volt
3. Meter
4. kilogram

76. Which of the following is a unit of Power.

1. Joules
2. Meter
3. Waft
4. kilogram

77. Which Of the following is application of Belt drive

1. Bicycle
2. Bus
3. Flour mill
4. All above

78. Which Of the following is application of Rope drive

1. Motor cycle
2. Car
3. Bicycle
4. Crane

79. Which of the following is boiler accessory?

1. Economizer
2. Safety Valve
3. Feed check valve
4. Water level indicator

80. Which of the following is not a unit of distance?

1. Light year
2. Mile
3. Angstrom
4. Carat

81. Which of the following is true conversion for unit of pressure?

1. 1 bar =10⁵ Pa
2. 1 bar = 1 Pa
3. I Pa =10⁵ bar
4. None of these

82. Which of the following set is of basic quantities?

1. Mass, force, time
2. Distance, density, temperature b)
3. Time, electric current, velocity
4. Distance, time, temperature

83. Which of the following set of instruments are used to measure pressure?

1. Manometer, pressure gauge
2. Rotameter, pressure gauge
3. Manometer, rotameter
4. None of above

84. Which Of the following type of belts is also known as positive drive belt?

1. V-belt
2. Flat belt
3. Timing belt
4. Wedge type belt

85. Which of the following type of centrifugal pump converts kinetic energy of pump into pressure energy:

1. Foot valve
2. Casing
3. Suction pipe
4. Impeller

86. Which Of the following type Of drives transmit power by friction?

1. Spur gear drive
2. Chain drive
3. Worm gear drive
4. Belt drive

87. Which one is larger unit of mass?

1. Kilogram
2. Gram
3. Pound
4. Milligram

88. Which one is link between piston and crank

1. Connecting rod
2. Piston pin
3. Push rod
4. Crank shaft

89. Which one of the externally fired boiler.

1. Babcock and Wilcox
2. Cochran
3. Lancashire
4. All of the above

90. Which part used in I.C.Engine to convert reciprocating motion of piston to rotary motion of output shaft

1. Connecting road
2. Crank shaft
3. Cam shaft
4. Gudgeon pin

91. Which property is called Intensive property?

1. Kinetic energy
2. Internal energy
3. viscosity
4. magnetization

92. Which types of coupling used to connecting shafts, whose axis are parallel but not in one line?

1. muff coupling.
2. flexible coupling
3. Oldhams coupling
4. flange coupling

93. With increase in gravitational force, mass Of substance will

1. Increase
2. Decrease
3. Remain constant
4. May increase or decrease

94. Wood is

1. A fuel known as brown coal
2. Shining black
3. Easily available natural fuel
4. None of this

95. During suction stroke in a diesel engine, it draws in

1. Vapour of petrol only
2. Air only
3. Mixture of petrol and air
4. Only air