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Measurement and Instrumentation

Measurement and Instrumentation
No eddy current and hysteresis losses occur in

Moving iron instruments
Electrodynamo meter instruments
Electrostatic instruments
PMMC instruments

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Measurement and Instrumentation
A permanent magnet moving coil ammeter is connected in 50 Hz a. c. Circuit in which 5A current is flowing. The meter will read

None of the listed here
5 A
0 A
2.5 A

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Measurement and Instrumentation
Which instrument has identical calibration for ac as well as dc values?

Moving coil type
Moving iron type
Hot wire type
Induction type

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Measurement and Instrumentation
The dynamometer principle can be used for

 wattmeter only.
 ammeter, voltmeter and wattmeter.
 voltmeter only.
 ammeter only.

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Measurement and Instrumentation
Electrostatic instruments are normally used for

High current measurements
Low voltage measurements
High voltage measurements
Low current measurements

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Measurement and Instrumentation
The EMF of Weston standard cell is measured using

Digital Volt meter
Potentiometer
Moving-coil meter
Moving- iron meter

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MORE MCQ ON Measurement and Instrumentation

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