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).

Underground Transmission MCQ

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:

  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:

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

Correct answer: 1. Decrease

Intersheat 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:

  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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