Electrical Engineering MCQs on Power Transmission MCQs Part 24
Contents
Transposition is carried out on
Transposition is carried out on:
- Power lines only
- Telecommunication lines only
- Both of these
- None of these
Correct answer: 3. Both of these
Due to proximity effect, the increase in conductor resistance is not negligible in
Due to proximity effect, the increase in conductor resistance is not negligible in:
- Communication lines
- Overhead transmission lines
- Underground cables
- All of the above
Correct answer: 3. Underground cables
The transmission line that is most practically used in load flow analysis
The transmission line that is most practically used in load flow analysis:
- Nominal T
- Nominal ∏
- Either of above
- None of these
Correct answer: 2. Nominal ∏
Pin insulators are used up to
Pin insulators are used up to:
- 11 kV
- 33 kV
- 365 kV
- Any voltage level
Correct answer: 2. 33 kV
Also see: Top 5 Types of Insulators Used on Power Transmission and Distribution Lines
Which of following occurs due to corona
Which of following occurs due to corona
- Charging current increases
- Interference increases
- Power loss increases
- All of these
Correct answer: 4. All of these
Explanation: Corona effect is defined as the electrical discharge of atmospheric air. If operating voltage is greater than dielectric strength of atmospheric air, air molecules are ionized and start accumulating on the conductor surfaces producing corona.
Corona effects result in:
- Charging current increases
- Interference increases
- Power loss increases
Also see: Top 5 Factors Affecting Corona in Transmission Lines