Electrical Engineering MCQs on Power Transmission
The bundled arrangement reduces:
- Inductance of line
- Power loss due to corona
- Radio interference due to corona
- All of these
Correct answer: 4. All of these
Explanation: Bundled conductors refers to the use of multiple conductors per phase rather of one single conductor per phase. One of the major advantage of using bundled conductors is its ability to reduce corona discharge.
In case a single conductor is used for power transfer at very high voltages, the voltage gradient around line is high, and there is a high probability of occurrence of corona effect even under normal conditions and particularly in bad weather conditions.
In case of using several conductors per phase forming a bundled conductor voltage gradient reduces as well as corona formation reduces.