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HIGH VOLTAGE ENGINEERING

Authored by Maheswari A

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University

Used 8+ times

HIGH VOLTAGE ENGINEERING
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15 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

1. During impulse withstand test the impulse applied to the insulator is:

1. 1/50 μ sec

2. 0.1/0.05 μ sec

2. 0.1/0.05 μ sec

4. 0.001/50 μ sec

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Marx multistage impulse generator model involves:

1. High ohmic resistances

2. Low ohmic resistances

3. Both of these

4. None of these

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Usually, the impulse voltage is:

1. Unidirectional

2. Bidirectional

3. Tridirectional

4. Quadridirectional

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The standard shape of impulse wave as specified by the American standard is 1.5/40 μsec. The number 1.5 is:

1. Wave front

2. Wave tail

3. Wave head

Wave footing

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The small load current in Cockroft – Walton circuit means:

1. Voltage drop is very large

2. Voltage drop is small

3. None of these

4. Can’t predict

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The dielectric strength of liquids is of the order:

1. 100 kV/cm

2. 1000 kV/cm

3. 5000 kV/cm

4. 10000 kV/cm

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The rectifier which generates high voltage d.c from a.c:

1. Half-wave rectifiers

2. Full wave rectifiers

3. Voltage doubler type rectifiers

4. All of these

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