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

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

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Measurement and Instrumentation
Which of following statement are correct in case of power factor meter?

 The deflection is proportional to phase angle between field coil and crossed coil.
 Both B and C.
 The restoring torque is provided by a controlling torque.
 It consist of two coils mounted at right angles to each other.

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