High Voltage Engineering Test Questions Start Creating PDF

MCQ: For the measurement of radio interference voltages, the detector circuit is provided with a measuring device to measure

1. Average value
2. Peak value
3. Quasi-peak value
4. All of these.

MCQ: For operating power frequency voltages, a surge arrester has to be a

1. Conductor
2. Non-conductor
3. Semiconductor
4. None of these

MCQ: Failure during switching impulse tests are can be determined by

1. Visible in oscillograms
2. Loud noise produced
3. External flashovers
4. All of these

MCQ: Impulse testing of transformers is done using

1. Full wave standard impulse
2. Chopped wave standard impulse
3. Half wave standard impulse
4. Only (a) and (b)
5. None of these

MCQ: The expected life at the rated stress can be determined by conducting long duration life tests at increased stress for

1. Less than 1 hr
2. 1 hr to about 1000 hr
3. More than 1000 hr
4. None of these

MCQ: The sparkover voltage

1. Increases with humidity
2. decreases with the partial pressure of water vapour in air
3. Humidity effect decreases with the size of spheres
4. Humidity is minimum for uniform field gaps

MCQ: For voltage measurements, the gap which gives the highest accuracy is

1. Sphere gaps
2. Field gaps
3. Rod gaps
4. None of these

MCQ: The series capacitor peak voltmeter is suitable for

1. Positive half cycle
2. Negative half cycle
3. Sinusoidal waveform
4. All of these

MCQ: The attractive force between the electrodes of a parallel plate capacitor is

1. Directly proportional to the square of the applied voltage between plates
2. Directly proportional to the capacitance between the plates
3. Inversely proportional to the square of the separation between the plates
4. All of these

MCQ: A Capacitance Voltage Transformer can be connected to a

1. High impedance device
2. Low impedance device
3. Relay coil
4. Only (b) and (c)