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

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

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Measurement and Instrumentation
It can be stated that

No generalisation can be made with regard to the flux densities in CT and PT
CT operates with a higher flux density than PT
CT operates at almost the same flux density as a PT
CT operates with considerably lower flux density than a PT

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