Electrical Machine

1. The no-load current drawn by the transformer is usually what percent of the full-load current?(a) 0.2 to 0.5 percent(b) 2 to 5 percent(c) 12 to 15 percent(d) 20 to 30 percent Ans: b2. Sumpner’s test is conducted on transformers to determine(a) temperature(b) stray losses(c) all-day efficiency(d) none of the above Ans: a 3.In a … Read more