Electric Power Transmission and Distribution MCQ Part 5

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Electric Power Transmission and Distribution MCQ Part 5 Questions with answers.

A section of overhead transmission line conductor suspended between two supports at unequal heights the maximum tension occurs

A section of overhead transmission line conductor suspended between two supports at unequal heights the maximum tension occurs:

  1. At Midpoint
  2. At Higher support
  3. At Lower support
  4. Equally at all points

Correct answer: 2. At Higher support

Expanded ACSR conductors

Expanded ACSR conductors have:

  1. More number of Aluminum conductor strands as compare to normal ACSR
  2. More number of Steel conductor strands as compared to normal ACSR
  3. A fibrous or plastic material filled between the Aluminum and Steel strands
  4. None of these

Correct answer: 3. A fibrous or plastic material filled between the Aluminum and Steel strands

Steel pole for transmission lines need protection against

Steel pole for transmission lines need protection against:

  1. Corrosion
  2. Termite
  3. Kalotermitidae
  4. None of these

Correct answer: 1. Corrosion

In 7/30 ACSR conductor it is a common practice to put grease between steel and aluminum conductor

In 7/30 ACSR conductor it is a common practice to put grease between steel and aluminum conductor:

  1. To reduce friction between strands
  2. To reduce current leakage
  3. To decreases electrical resistance
  4. To reduce electrolytic corrosion between zinc and aluminum

Correct answer: 4. To reduce electrolytic corrosion between zinc and aluminum

Ground wire is manufactured from

Ground wire is manufactured from:

  1. Aluminum
  2. Cast iron
  3. Galvanised steel
  4. Copper

Correct answer: 3. Galvanised steel

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