Electrical Power Transmission MCQs Part 5

1. Which one of the following is not standard voltage in USA:

1. 230 kV
2. 345 kV
3. 400 kV
4. 500 kV
5. 765 kV

Correct answer: 3. 400 kV

2. The phenomenon of corona occurs on:

1. HVDC transmission lines
2. HVAC transmission lines
3. Both of these
4. None of these

Correct answer: 3. Both of these

3. Skin effect:

1. Increases the working current flow
2. Decrease the working current flow
3. Doesn’t have any impact on the current flow
4. Any of above

Correct answer: 2. Decrease the working current flow

4. Underground cables can be made from:

1. Copper
2. Aluminum
3. Both of these
4. None of these

Correct answer: 3. Both of these

5. Generally, the metallic sheath in cables is made of:

1. Copper
2. Lead
3. Iron
4. Zinc

Correct answer: 2. Lead

6. The term converter refers to a system which changes:

1. AC to DC
2. DC to AC
3. Any of above
4. None of above

Correct answer: 3. Any of above

7. Underwater power transmission is done via:

1. HVAC
2. HVDC
3. Both of these
4. None of these

Correct answer: 2. HVDC

8. Corona effect is more likely to happen on:

1. Solid conductors
2. Stranded conductors

Correct answer: 2. Stranded conductors

9. The voltage drops due to coronas are:

1. Sinusoidal
2. Non-sinusoidal
3. Impulsive
4. Single surge type

Correct answer: 2. Non-sinusoidal

10. The material which exhibits more sag:

1. Aluminum
2. Copper
3. Silver
4. Diamond

Correct answer: 1. Aluminum

---

Next Electrical Power Transmission MCQs Part 6

List of All: Electrical Power Transmission MCQs

Previous Electrical Power Transmission MCQs Part 4