Measurement and Instrumentation
The measurement of a quantity

 is a comparison of an unknown quantity with another quantity.
 is a comparison of an unknown quantity with known quantity.
 none of these.
  is a comparison of an unknown quantity with standard.

ANSWER DOWNLOAD EXAMIANS APP

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.
 It consist of two coils mounted at right angles to each other.
 The restoring torque is provided by a controlling torque.
 Both B and C.

ANSWER DOWNLOAD EXAMIANS APP