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Measurement and Instrumentation - Interview Questions and Answers

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56. Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?
A. Absolute instruments
B. Indicating instruments
C. Recording instruments
D. Integrating instruments
Explanation:
57. A phase shifting transformer is used in conjunction with
A. D.C. potentiometer
B. Drysdale potentiometer
C. A.C. co-ordinate potentiometer
D. Crompton potentiometer
Explanation:
58. In a Weston synchronoscope, the fixed coils are connected across
A. bus-bars
B. incoming alternator
C. a lamp
D. none of the above
Explanation:
59. Wagner earthing device is used to eliminate errors due to
A. electrostatic coupling
B. electromagnetic coupling
C. both (a) and (b)
D. none of the above
Explanation:
60. Basically a potentiometer is a device for
A. comparing two voltages
B. measuring a current
C. comparing two currents
D. measuring a voltage
Explanation:
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