High Voltage Engineering MCQs
1. Marx multistage impulse generator model involves:
- High ohmic resistances
- Low ohmic resistances
- Both of these
- None of these
Ans: 3
2. Four statements are mentioned about the rod gaps, mention the correct statement:
- Rod gaps are most accurate measurement devices
- The use of rod gaps is not allowed as a.c measurement devices
- Rod gaps contain 7 capped rods that are spaced at 1 mm
- None of these is correct
Ans: 2
3. Cascaded transformers are most commonly employed in high voltage testing labs. The major __________ associated with the cascading configuration is that _________ stages are loaded more as compared to _________ stages.
- advantage, lower, upper
- disadvantage, lower, upper
- advantage, upper, lower
- disadvantage, upper, lower
Ans: 2
4. According to stressed oil volume theory, the breakdown strength __________ the stressed oil volume:
- Is inversely proportional to
- Is directly proportional to
- Is independent of
- None of these
Ans: 1
5. Recurrent surge generator provides:
- Two current impulses
- A large current impulse
- A large magnitude impulse voltage
- A smaller magnitude impulse voltage
Ans: 4
6. The dielectric strength of Mica is:
- 1000 kV/in
- 1500 kV/in
- 5000 kV/in
- 10000 kV/in
Ans: 3
7. The correct statement about SF6 gas:
- Under normal circumstances, It can be used above 14 kg/cm2
- Under normal circumstances, it can’t be used above 14 kg/cm2
Ans: 2
8. Usually, the Insulation of power systems is classified in categories:
- Internal
- Mid
- External
- All of these
- 1 & 2
- 1 & 3
Ans: 6
9. External insulation comprises:
- Air & Porcelain
- Paper & Oil Insulation
- Aluminium & Copper
- Gold & Silver
Ans: 1
10. The generating voltmeter is:
- A Non-linear electromechanical device
- A variable capacitor electrostatic device
- Asynchronous generator with plc module
Ans: 2