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The RMS value of a half-wave rectified current is 10 Ampere. Its value for full-wave rectification would be


1. 10 Ampere
2. 14.14 Ampere
3. 31.4 Ampere
4. 20 Ampere

1 Answer

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Correct Answer - Option 2 : 14.14 Ampere

Half wave rectifier:

RMS Value\(= \frac{{Max.\;value}}{2}\)

Average Value =\(\frac{{Max.\;value}}{\pi }\)

Full-wave rectifier:

\(rms\;value = \frac{{maximum\;value}}{{\sqrt 2 }}\)

\(Average\;value = 2\left( {\frac{{maximum\;value}}{\pi }} \right)\)

Calculation:

The RMS value of a half-wave rectified current is 10 Ampere

RMS Value \(= \frac{{Max.\;value}}{2}\)

10 = \(= \frac{{Max.\;value}}{2}\)

Maximum value (Im) = 20 A

The RMS value for full-wave rectification

\(rms\;value = \frac{{maximum\;value}}{{\sqrt 2 }}\)

\(rms\;value = \frac{{20}}{{\sqrt 2 }}\)

RMS value = 14.14 A

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