Components of Transmission Lines MCQ
Transmission lines carry the bulk of electricity from one place to another. Transmission lines contain conductors, insulators, protection devices, and transformers.
MCQ on Transmission line components
Guying is used:
- When a pole is not strong enough
- When transmission lines are in high lighting environments
- When HVDC transmission is used
- With three-phase systems
Correct answer: 4. With three-phase systems
Most commonly used material for transmission lines
- Aluminum only
- ACSR
- Steel only
- Steel + Copper
Correct answer: 2. ACSR
The topmost conductor on transmission lines is:
- For telecom lines
- Earth
- For mechanical support only
Correct answer: 2. Earth
For 765 kV which type of insulator is recommended:
- Suspension type
- Pin type
- Suspension type
- All of these
Correct answer: 3. Suspension type
String efficiency can be improved using:
- Longer cross arms
- By using a guard ring
- By grading the insulators
- All of these
Correct answer: 4. All of these