Electrical Power Transmission MCQs
1. Sort the EHV class of voltages:
- 66 kV-660 kV
- 345 kV-765 kV
- 100 kV-1000 kV
- 110 kV-1100 kV
Ans: 2
2. The surge impedance of a transmission line is defined as:
- √(L/C)
- √LC
- √(L + C)
- √(C – L)
Ans: 1
3. Voltage regulation of a well-designed transmission line is expected to be:
- Low
- Medium
- High
- Very high
Ans: 1
4. Compare to solid transmission conductor, the stranded conductor has _________ skin effect:
- Greater
- Smaller
Ans: 1
5. Bundled conductors are used in:
- HVDC lines
- HVAC lines
- Both of these
- None of these
Ans: 3
6. The transmission line conductors are made of:
- Copper
- Gold
- ACSR
- Aluminum
Ans: 3
7. The major advantage associated with the high voltages:
- The losses are reduced to a negligible extent
- Power transfer capability is improved
- Area of cross-section is reduced
- All of these
Ans: 4
8. The correct statement about corona and surge transients:
- Corona increases the transients
- Corona reduces the transients
- Both are not related
Ans: 2
9. The ________ the cross arms of pylon, the _________ is the efficiency.
- Shorter, Greater
- Longer, Greater
Ans: 2
10. Long transmission lines are modeled using:
- Rigorous Method
- Nominal T Method
- Nominal Pi Method
- End condensor method
Ans: 1