Distribution transformers should be designed to have maximum efficiency at:
- Full load
- No load
- 50% to 60% of load
- 95% to 96% of load
Correct answer: 3. 50% to 60% of load
Explanation: The distribution transformer is designed to work with maximum efficiency at 50% to 60% of the load. Because normally doesn’t it is loaded with 50% 50 60% and all the load is not present throughout the day.