In a three-phase supply floating neutral is undesirable because it way give rise to___________?

Related Mcqs:

The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that

A. both waves must have same frequency B. both waves must have identical peak values C. both waves must have zero value at the same time D. none of the above...

If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is____________?

A. a sinusoid of the same frequency B. a sinusoid of half the original frequency C. a sinusoid of double the frequency D. not a sinusoid...

Form Factor is the ratio of__________?

A. average value/r.m.s. value B. average value/peak value C. r.m.s. value/average value D. r.m.s. value/peak value...

In the case of an unsymmetrical alternating current the average value must always be taken over__________?

A. unsymmetrical part of the wave form B. the quarter cycle C. the half cycle D. the whole cycle...

Which of the following statements pertains to resistors only _____________?

A. can dissipate considerable amount of power B. can act as energy storage devices C. connecting them in parallel in¬creases the total value D. oppose sudden changes in voltage...