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Measurement and Instrumentation

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

5 A
None of the listed here
0 A
2.5 A

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Measurement and Instrumentation
Most accurate measurement of unknown resistance will be by

Wheatstone bridge
Voltmeter and ammeter
Potentiometer
Ohmmeter

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Measurement and Instrumentation
In a moving iron meter, the deflecting torque is proportional to

Current through the coil
Square of the current through the coil
Sine of the measurand
Squareroot of the measurand

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Measurement and Instrumentation
For measurement of mutual inductance we can use

Heavyside bridge
Any of the listed here
Maxwell's bridge
Anderson bridge

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Measurement and Instrumentation
Which one of the following units is a fundamental unit?

 Ampere
 Joule/sec
 Newton
 Watt

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Measurement and Instrumentation
How many fundamental units are there ?

 6
 7
 4
 8

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