1. The correct model of AC power generation and transmission flow from left to right:
- Alternator, Step up, Step down, Step down
- Alternator, Step down, Step down, Step up
- Alternator, Step up, Step up, Step down
- 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:
- Alternator, Step down, Rectifier, Inverter
- Alternator, Step up, Inverter, Rectifier
- Alternator, Step up, Rectifier, Inverter
- Alternator, Step down, Inverter, Rectifier
Correct answer: 3. Alternator, Step up, Rectifier, Inverter
3. In terms of transmission equipment, higher voltage level:
- Becomes less expensive
- Becomes more expensive
Correct answer: 2. Becomes more expensive
4. Surge impedance of transmission lines:
- √(L * C)
- 1 / √(L * C)
- 1 / √(L / C)
- √(L / C)
Correct answer: 4. √(L / C)
5. Guying is done in power systems:
- To diminish corona
- For reducing sag
- To strengthen poles
- For Keeping RI away
Correct answer: 3. To strengthen poles
6. An advantage associated with corona formation:
- Ozone is produced
- Non-sinusoidal voltage drops occur
- It reduces RI’s
- Surge transients are reduced
Correct answer: 4. Surge transients are reduced
7. The phenomenon of corona is observed on:
- AC lines
- DC lines
- Both of these
- None of these
Correct answer: 3. Both of these
8. Performance test of insulators include:
- Pollution flashover test
- Temperature test
- Wet flashover test
- Impulse test
Correct answer: 2. Temperature test
9. Routine test of insulators include:
- Pollution flashover test
- Temperature test
- Corrosion test
- Impulse test
Correct answer: 3. Corrosion test
10. For high voltages the preferred insulator is:
- Wet process porcelain
- Dry process porcelain
- Any of above
- None of above
Correct answer: 1. Wet process porcelain
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