Question 5
- State three advantages for electrical transmission at high voltages.
- State the voltage values of:
- single phase distribution;
- three phase distribution.
Observation
The expected answers were;
- Reasons for transmission at high voltages:
- Standardization of frequency and voltages.
- Better voltage regulation.
- Transmitting very large power over long distances
- Reduction of power loss
- Reduction of transmission cost
- Improved rate of transmission
- (i) Single phase - 240V
(ii) Three phase - 415V
Many candidates who attempted this question performed well which indicates good understanding of the topic.