Electrical Power Transmission MCQs Part 28

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Electrical Engineering MCQs on Power Transmission Part 28

The inductance of transmission line will be small when

The inductance of transmission line will be small when:

  1. GMR is high
  2. GMD is high
  3. Both GMD and GMR are high
  4. GMD is low but GMR is high

Correct answer: 4. GMD is low but GMR is high

Line resistance and inductive reactance in a transmission line

The correct relationship between line resistance (R) and inductive reactance XL in a transmission line are related by which of following relationship:

  1. XL = R
  2. XL < R
  3. XL > R
  4. None of these

Correct answer: 3. XL > R

ACSR conductor comprising of 70 aluminum conductors and 6 steel conductors is specified as

ACSR conductor comprising of 70 aluminum conductors and 6 steel conductors is specified as:

  1. 6/70
  2. 70/6
  3. 6/76
  4. 70/76

Correct answer: 2. 70/6

Which of following technique is not a static compensation technique

Which of following technique is not a static compensation technique

  1. Shunt capacitor bank 
  2. VAR compensators 
  3. Series compensation
  4. Synchronous condensers 

Correct answer: 4. Synchronous condensers

Explanation: Synchronous condensers is not a static compensation technique. In this technique a synchronous motor in the no-load condition in an overexcited state is connected across the load in order to improve the power factor.

Wind load on overhead transmission line acts

Wind load on overhead transmission line acts:

  1. Horizontally
  2. Vertically upward
  3. Vertically downward
  4. None of these

Correct answer: 1. Horizontally

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