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Measurement and Instrumentation

Measurement and Instrumentation
In which of the transformer is the secondary nearly short circuited under normal operating condition?

 PT.
 CT.
 Distribution transformer.
 Power transformer.

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Measurement and Instrumentation
A wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of

 Contact resistance.
 All of above.
 Thermoelectric emfs.
 Resistance of connecting leads.

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Measurement and Instrumentation
The best type of meter moment is ______ moment.

None of the listed here
D'Arsonval
Dynamometer
Iron- vane

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Measurement and Instrumentation
A rectifier type instrument is connected to 100VDC and is operated in the DC measuring module reads

100V
50V
90V
111V

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Measurement and Instrumentation
A power factor meter has

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

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Measurement and Instrumentation
Figure show an RC potentiometer to measure AC voltage. It is desire that Vo/Vi should be independent of frequency. The value of C shoud be

 10 µF.
 11 µF.
 0.09 µF.
 0.1 µF.

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