Measurement and Instrumentation
The two pressure coils of a single phase power factor meter have

The same number of turns but different dimensions
The same dimension but different number of turns
None of these
The same dimensions and the same number of turns

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Measurement and Instrumentation
In AC circuits, the connection of measuring instruments cause loading effect errors which may effect

 magnitude, phase and waveform of the quantity being measured.
 only the magnitude of the quantity being measured.
 only phase of the quantity being measured.
 both of above.

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