Power transformers are designed to have maximum efficiency at___________?

Related Mcqs:

Which of the following does not change in a transformer ?

A. Current B. Voltage C. Frequency D. All of the above...

The purpose of providing an iron core in a transformer is to_____________?

A. provide support to windings B. reduce hysteresis loss C. decrease the reluctance of the magnetic path D. reduce eddy current losses...

Transformer breaths in when_______________?

A. load on it increases B. load on it decreases C. load remains constant D. none of the above...

Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in____________?

A. short-circuiting of the secondaries B. power factor of one of the transformers is leading while that of the other lagging C. transformers having higher copper losses will have negligible core losses D. loading of the transformers not in proportion to their kVA ratings...

A Transformer transforms____________?

A. voltage B. current C. current and voltage D. power...