1. Increases because of stray capacitance as the frequency increases
2. Decreases because of stray capacitances as the frequency increases
3. Remain the same irrespective of the increase in frequency even if stray series capacitance are present
4. None of these
Decreases because of stray capacitances as the frequency increases
1. Frequency
2. Friction
3. Power consumed in current coil
4. Power consumed in potential coil
Power consumed in potential coil
1. Power factor is unity
2. Load is balanced
3. Phase angle is between 600 and 900
4. The load is purely inductive
The load is purely inductive
1. 50 ohm / volt
2. 100 ohm / volt
3. 200 ohm / volt
4. 500 ohm / volt
200 ohm / volt
1. Volt-ampere product
2. Average power
3. Peak power
4. Instantaneous power
Average power
1. Moving coil voltmeter
2. Null-balancing potentiometer
3. Moving iron voltmeter
4. Electrostatic voltmeter
Null-balancing potentiometer
1. Closeness of the value indicated by it to the correct value of the measurand
2. Repeatability of the measured value
3. Speed with which the instrument’s reading approaches the final value
4. Least change in the value of the measurand that could be detected by the instrument
Closeness of the value indicated by it to the correct value of the measurand
1. Zero
2. 0.5
3. 0.866
4. 1.0
0.5
1. 120 ohm
2. 400 ohm
3. 1.8 ohm
4. 2.4 k- ohm
2.4 k- ohm
1. Using extra turns on the voltage coil
2. Having two holes on opposite sides of the disc
3. Using a stronger brake magnet
4. Using steel laminations of high permeability
Having two holes on opposite sides of the disc