Measurement and Instrumentation MCQ Multiple Choice Questions - Page 5 for Practice

Q: 63. The spring material used in a spring control device should have the following property.

Correct Answer is: All of the above

Q: 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

Q: 65. The switch board instruments

Correct Answer is: should be mounted in vertical position

Q: 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

Q: 68. To avoid the effect of stray magnetic field in A.C. bridges we can use

Correct Answer is: magnetic screening

Q: 69. To measure a resistance with the help of a potentiometer it is

Correct Answer is: not necessary to standardise the potentiometer

Q: 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

Q: 71. To measure radio frequency, the suitable frequency meter is

Correct Answer is: hetrodyne frequency meter

Q: 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

Q: 73. Various adjustments in an energy meter include

Correct Answer is: temperature compensation

Measurement and Instrumentation MCQ Questions for Practice

61. The resistance in the circuit of the moving coil of a dynamometer wattmeter should be

almost zero
low
high
none of the above

62. The scale of a rectifier instrument is

linear
non-linear
either a or b
neither a nor b

63. The spring material used in a spring control device should have the following property.

Should be non-magnetic
Most be of low temperature co-efficient
Should have low specific resistance
All of the above

64. The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a

single-phase winding
two-phase winding
three-phase winding
any of the above

65. The switch board instruments

should be mounted in vertical position
should be mounted in horizontal position
either a or b
neither a nor b

66. The two pressure coils of a single phase power factor meter have

the same dimensions and the same number of turns
the same dimension but different number of turns
the same number of turns but different dimensions
none of the above

67. The use of...............instruments is merely confined within laboratories as stand¬ardizing instruments

absolute
indicating
recording
integrating

68. To avoid the effect of stray magnetic field in A.C. bridges we can use

magnetic screening
Wagner earthing device
wave filters
any of the above

69. To measure a resistance with the help of a potentiometer it is

necessary to standardise the potentiometer
not necessary to standardise the potentiometer
necessary to use a volt ratio box in conjunction with the potentiometer
none of the above

70. To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supplyfor the potentiometer in taken

from a source which is not the same as the unknown voltage
from a battery
from the same source as the unknown voltage

71. To measure radio frequency, the suitable frequency meter is

Weston frequency meter
reed vibrator frequency meter
hetrodyne frequency meter
electrical resonance frequency meter

72. Two holes in the disc of energymeter are drilled at the opposite sides of the spindle to

improve its ventilation
eliminate creeping at no load
increase its deflecting torque
increase its braking tcrque

73. Various adjustments in an energy meter include

light load or friction
lag and creep
overload and voltage compensation
temperature compensation

74. Volt box is a component to

extend voltage range
measure voltage
compare voltage in a box
none of the above

75. Wagner earthing device is used to eliminate errors due to

electrostatic coupling
electromagnetic coupling
both a and b
none of the above