One of the main advantages of Swinburne's test is that it,
- A. is applicable both to shunt and compound motors
- B. Needs one running test
- C. is very economical and convenient
- D. ignores any change in iron loss
Answer: C. is very economical and convenient
Explanation: Swinburne's test is a no-load test that draws only the no-load losses from the supply, making it an extremely economical and convenient method to predetermine efficiency without actually loading large machines.