N atural air coo ling is generally restricted for transformers up to__________?

Related Mcqs:

The degree of mechanical vibrations produced by the laminations of a transformer depends on____________?

A. tightness of clamping B. gauge of laminations C. size of laminations D. all of the above...

In a transformer routine efficiency depends upon_____________?

A. supply frequency B. load current C. power factor of load D. both B. and (c)...

Distribution transformers are generally designed for maximum efficiency around________________?

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

Negative voltage regulation is indicative that the load is___________?

A. capacitive only B. inductive only C. inductive or resistive D. none of the above...

The size of a transformer core will depend on__________?

A. frequency B. area of the core C. flux density of the core material D. A. and B. both...