Electrical Power Transmission MCQs Part 9

1. The point which should be considered while designing transmission systems:

  1. Selection of transmission route
  2. Expansion planning
  3. Network analysis
  4. Observation of Reliability
  5. All of these

Correct answer: 5. All of these

2. Short transmission lines are modeled by:

  1. Series resistance and series inductance
  2. Series resistance and series capacitance
  3. Series resistance and shunt capacitance
  4. Series resistance, series capacitance, and series inductance

Correct answer: 1. Series resistance and series inductance

3. Shunt capacitance of short transmission lines is:

  1. Very high
  2. Negligible
  3. 0.85 times the long lines
  4. 0.46 times the medium lines
  5. Both 3 and 4

Correct answer: 2. Negligible

4. The best conductor for transmission lines in terms of conductivity:

  1. Copper
  2. Aluminum
  3. Iron
  4. Steel

Correct answer: 1. Copper

5. The number of wire strands in a 5 layer transmission line:

  1. 16
  2. 20
  3. 47
  4. 61
  5. 91

Correct answer: 4. 61

Solution: Number of stands = 3(n2 – n) + 1

6. Bundled conductors are recommended above:

  1. 67 kV
  2. 120 kV
  3. 230 kV
  4. 400 kV

Correct answer: 3. 230 kV

7. The effective radius of multiple strand wire is calculated using:

  1. Kelvin law
  2. Guy’s theorem
  3. Transposition
  4. Proximity theorem

Correct answer: 2. Guy’s theorem

8. Ozone generation due to corona effect is undesired because:

  1. It corrodes the conductor
  2. It gives poor visual effect
  3. It smells bad
  4. It increases the effective area of the conductor

Correct answer: 1. It corrodes the conductor

9. The discharge path in a punctured insulator:

  1. From the first disc to the third disc
  2. Is through air gaps
  3. Throughout the body of the conductor
  4. None of above

Correct answer: 3. Throughout the body of the conductor


Next Electrical Power Transmission MCQs Part 10

List of All: Electrical Power Transmission MCQs

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