Delta/star transformer works satisfactorily when______________?

Related Mcqs:

Sumpner’s test is conducted on transformers to determine_____________?

A. temperature B. stray losses C. all-day efficiency D. none of the above...

Power transformers are designed to have maximum efficiency at___________?

A. nearly full load B. 70% full load C. 50% full load D. no load...

The value of flux involved m the e.m.f. equation of a transformer is____________?

A. average value B. r.m.s. value C. maximum value D. instantaneous value...

An open-circuit test on a transformer is conducted primarily to measure______________?

A. insulation resistance B. copper loss C. core loss D. total loss E. efficiency F. none of the above...

Which of the following acts as a protection against high voltage surges due to lightning and switching ?

A. Horn gaps B. Thermal overload relays C. Breather D. Conservator...