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Measurement and Instrumentation

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

 Ampere
 Newton
 Watt
 Joule/sec

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Measurement and Instrumentation
Null type recorders are

 LVDT recorders.
 potentiometric recorders.
 any one of the above.
 bridge recorders.

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Measurement and Instrumentation
For measuring an AC voltage by an AC potentiometer it is desirable that the supply for the potentiometer is taken from

 A source other than the source of unknown voltage.
 Any of above.
 A battery.
 The same source as the unknown voltage.

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Measurement and Instrumentation
To measure the flux, devices used are based on

Voltaic effect
Hall effect
Piezo-electric effect
Photo-voltaic effect

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Measurement and Instrumentation
______ movement is most expensive.

Moving iron
Dynamometer
None of the listed here
D'Arsonval movement

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Measurement and Instrumentation
A power factor meter has

One current circuit and two pressure circuits
Two current circuit and one pressure circuit
One current circuit and one pressure circuit
None of the listed here

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