Underground power transmission is less liable to damages that occur by storms and lightning. It is recommended where the appearance of city matters (overhead lines are not desired). Given below are the underground power transmission MCQ questions:
Insulating material in cables should have
Insulating material in cables should have:
- High IR
- High dielectric strength
- Both of these
- None of these
Correct answer: 3. Both of these
If length of cable is doubled, its capacitance is
If length of cable is doubled, its capacitance is:
- Halved
- Remains same
- Doubled
- Quadrupled
Correct answer: 3. Doubled
In layers of impregnated paper insulation, the void cause breakdown voltage to
In layers of impregnated paper insulation, the void cause breakdown voltage to:
- Decrease
- Increase
- Remains same
- Become Zero
Correct answer: 1. Decrease
Intersheath grading of cables use which dielectric
Intersheath grading of cables use which dielectric:
- Composite
- Homogeneous
- Both of these
- None of these
Correct answer: 2. Homogeneous
XLPE stands for
XLPE stands for:
- Xenon Lithium Plastics
- Xenon Liquid Petroleum
- Cross-linked Polyethylene
- None of these
Correct answer: 3. Cross-linked Polyethylene