The core used in high frequency transformer is usually___________?

Related Mcqs:

The dielectric strength of transformer oil is expected to be______________?

A. lkV B. 33 kV C. 100 kV D. 330 kV...

What will happen if the transformers working in parallel are not connected with regard to polarity ?

A. The power factor of the two trans-formers will be different from the power factor of common load B. Incorrect polarity will result in dead short circuit C. The transformers will not share load in proportion to their kVA ratings D. none of the above...

Distribution transformers are generally designed for maximum efficiency around________________?

A. 90% load B. zero load C. 25% load D. 50% load...

Short circuit test on transformers is conducted to determine____________?

A. hysteresis losses B. copper losses C. core losses D. eddy current losses...

The efficiencies of transformers compared with that of electric motors of the same power are____________?

A. about the same B. much smaller C. much higher D. somewhat smaller E. none of the above...