Underground Power Transmission MCQ

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:

  1. High IR
  2. High dielectric strength
  3. Both of these
  4. 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:

  1. Halved
  2. Remains same
  3. Doubled
  4. 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:

  1. Decrease
  2. Increase
  3. Remains same
  4. Become Zero

Correct answer: 1. Decrease


Intersheath grading of cables use which dielectric

Intersheath grading of cables use which dielectric:

  1. Composite
  2. Homogeneous
  3. Both of these
  4. None of these

Correct answer: 2. Homogeneous


XLPE stands for

XLPE stands for:

  1. Xenon Lithium Plastics
  2. Xenon Liquid Petroleum
  3. Cross-linked Polyethylene
  4. None of these

Correct answer: 3. Cross-linked Polyethylene

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