In the case of PMMC rectifier type instruments, the deflecting torque is proportional to
1). Average value of AC current
2). RMS of AC
3). Instantaneous value
4). Peak value
Which one of the following effects is used in measuring power?
1). Seeback
2). Ferrari
3). Induction
4). Hall
Which of the following is not a static characteristic?
1). Drift
2). Dead zone
3). Sensitivity
4). Fidelity
Electrostatic instruments are normally used for
1). Low current measurements
2). High current measurements
3). Low voltage measurements
4). High voltage measurements
The pressure coil of a wattmeter should be connected on the supply side of the current coil when
1). Load impedance is high
2). Load impedance is low
3). Supply voltage is low
4). None of the above