Measurement and Instrumentation Objective Question and Answer
Measurement and Instrumentation MCQ Multiple Choice Questions - Page 3 for Practice
61. The resistance in the circuit of the moving coil of a dynamometer wattmeter should be
Correct Answer is: high
62. The scale of a rectifier instrument is
Correct Answer is: linear
63. The spring material used in a spring control device should have the following property.
Correct Answer is: All of the above
64. The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a
Correct Answer is: two-phase winding
65. The switch board instruments
Correct Answer is: should be mounted in vertical position
66. The two pressure coils of a single phase power factor meter have
Correct Answer is: the same dimensions and the same number of turns
67. The use of...............instruments is merely confined within laboratories as stand¬ardizing instruments
Correct Answer is: absolute
68. To avoid the effect of stray magnetic field in A.C. bridges we can use
Correct Answer is: magnetic screening
69. To measure a resistance with the help of a potentiometer it is
Correct Answer is: not necessary to standardise the potentiometer
70. To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supplyfor the potentiometer in taken
Correct Answer is: from the same source as the unknown voltage
71. To measure radio frequency, the suitable frequency meter is
Correct Answer is: hetrodyne frequency meter
72. Two holes in the disc of energymeter are drilled at the opposite sides of the spindle to
Correct Answer is: eliminate creeping at no load
73. Various adjustments in an energy meter include
Correct Answer is: temperature compensation
74. Volt box is a component to
Correct Answer is: extend voltage range
75. Wagner earthing device is used to eliminate errors due to
Correct Answer is: electrostatic coupling
76. Wattmeter cannot be designed on the principle of
Correct Answer is: moving iron instrument
77. When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is
Correct Answer is: all right
78. Which of the following are integrating instruments ?
Correct Answer is: Ampere-hour and watt-hour meters
79. Which of the following devices may be used for extending the range of instruments ?
Correct Answer is: All of the above
80. Which of the following devices should be used for accurate measurement of low D.C. voltage ?
Correct Answer is: D.C. potentiometer
81. Which of the following essential features is possessed by an indicating instrument ?
Correct Answer is: All of the above
82. Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?
Correct Answer is: Indicating instruments
83. Which of the following is an essential part of a motor meter ?
Correct Answer is: All of the above
84. Which of the following is measured by using a vector voltmeter ?
Correct Answer is: All of the above
85. Which of the following meters are not used on D.C. circuits
Correct Answer is: Induction meters
86. Which of the following properties a damping oil must possess ?
Correct Answer is: All of the above
87. .............instruments are those which measure the total quantity of electricity delivered in a particular time.
Correct Answer is: Integrating
88. A direct current can be measured by
Correct Answer is: a D.C. potentiometer in conjunction with a standard resistance
