Measurement and Instrumentation
A power factor meter has

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

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Measurement and Instrumentation
It can be stated that

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

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