Electrical Power Transmission MCQs Part 4

1. The correct model of AC power generation and transmission flow from left to right:

  1. Alternator, Step up, Step down, Step down
  2. Alternator, Step down, Step down, Step up
  3. Alternator, Step up, Step up, Step down
  4. Alternator, Step up, Step down, Step up

Correct answer: 1. Alternator, Step up, Step down, Step down

2. The correct model of DC power generation and transmission flow from left to right:

  1. Alternator, Step down, Rectifier, Inverter
  2. Alternator, Step up, Inverter, Rectifier
  3. Alternator, Step up, Rectifier, Inverter
  4. Alternator, Step down, Inverter, Rectifier

Correct answer: 3. Alternator, Step up, Rectifier, Inverter

3. In terms of transmission equipment, higher voltage level:

  1. Becomes less expensive
  2. Becomes more expensive

Correct answer: 2. Becomes more expensive

4. Surge impedance of transmission lines:

  1. √(L * C)
  2. 1 / √(L * C)
  3. 1 / √(L / C)
  4. √(L / C)

Correct answer: 4. √(L / C)

5. Guying is done in power systems:

  1. To diminish corona
  2. For reducing sag
  3. To strengthen poles
  4. For Keeping RI away

Correct answer: 3. To strengthen poles

6. An advantage associated with corona formation:

  1. Ozone is produced
  2. Non-sinusoidal voltage drops occur
  3. It reduces RI’s
  4. Surge transients are reduced

Correct answer: 4. Surge transients are reduced

7. The phenomenon of corona is observed on:

  1. AC lines
  2. DC lines
  3. Both of these
  4. None of these

Correct answer: 3. Both of these

8. Performance test of insulators include:

  1. Pollution flashover test
  2. Temperature test
  3. Wet flashover test
  4. Impulse test

Correct answer: 2. Temperature test

9. Routine test of insulators include:

  1. Pollution flashover test
  2. Temperature test
  3. Corrosion test
  4. Impulse test

Correct answer: 3. Corrosion test

10. For high voltages the preferred insulator is:

  1. Wet process porcelain
  2. Dry process porcelain
  3. Any of above
  4. None of above

Correct answer: 1. Wet process porcelain


Next Electrical Power Transmission MCQs Part 5

List of All: Electrical Power Transmission MCQs

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