Electronic Principles
Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question?

1000 W
100 W
20 W
None of these
200 W

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Electronic Principles
The rms value of a sine waveform is:

None of these
equal to 1.41 times the peak amplitude
the number of cycles completed in one second
the time required to complete one full cycle
equal to 0.707 times the peak amplitude

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