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Transformer

In an AC circ...

Question

In an AC circuit, maximum value of voltage is 423 volts. Its effective voltage is:

A

323 V

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B

340 V

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C

400 V

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D

300V

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Solution

The correct option is D 300V
Effective voltage is the rms voltage which is $= \frac{423}{\sqrt{2}} = 300 V$

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