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Measurement and Instrumentation

Measurement and Instrumentation
Which of the following devices may be used for extending the range of instruments?

All of the listed here
Potential transformers
Shunt
Current transformers

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

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

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Measurement and Instrumentation
The core flux in the CT of above question no.6, under the given operating conditions is

 225 mWb.
 1000 mWb.
 450 mWb.
 0.

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Measurement and Instrumentation
_______ instruments are those which measure the total quantity of the electricity delivered in a particular time.

Indicating
Recording
Integrating
Absolute

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Measurement and Instrumentation
Swamping resistance is used to compensate

 none of these.
 error due to temperature true variations.
 both A and B.
 error due to strong magnetic field.

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Measurement and Instrumentation
The function of shunt in an ammeter is to

Increase the resistance of ammeter
Increase the sensitivity of the ammeter
By pass the current
None of the listed here

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