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

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

ANSWER DOWNLOAD EXAMIANS APP

Measurement and Instrumentation
Assertion (A): A hot wire ammeter has a cramped scale. Reason (R): The heat is proportional to square of current.

 Both A and R are true and R is correct explanation of A.
 A is ture and R is false.
 A is false and R is ture.
 Both A and R are true and R is not correct explanation of A.

ANSWER DOWNLOAD EXAMIANS APP