The noise resulting from vibrations of laminations set by magnetic forces, is termed as_________________?

Related Mcqs:

The path of a magnetic flux in a transformer should have______________?

A. high resistance B. high reluctance C. low resistance D. low reluctance...

The function of conservator in a transformer is___________________?

A. to project against’internal fault B. to reduce copper as well as core losses C. to cool the transformer oil D. to take care of the expansion and contraction of transformer oil due to variation of temperature of sur-roundings...

Which winding of the transformer has less cross-sectional area?

A. Primary winding B. Secondary winding C. Low voltage winding D. High voltage winding...

For the parallel operation of single phase transformers it is necessary that they should have___________?

A. same efficiency B. same polarity C. same kVA rating D. same number of turns on the secondary side....

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...