A permanent magnet moving coil type ammeter and a moving iron type ammeter is connected in series with the output of a half-wave rectifier. If the moving iron type instrument reads 5-ampere magnet moving coil type instrument is likely to be

A permanent magnet moving coil type ammeter and a moving iron type ammeter is connected in series with the output of a half-wave rectifier. If the moving iron type instrument reads 5-ampere magnet moving coil type instrument is likely to be

Right Answer is:

3.18 A

SOLUTION

For half-wave rectifier

IDC = IPeak

IRMS = IPeak/2

IDC = 2 × IRMS ⁄ π

Where

IDC = DC output current

IPeak = Peak value of the current

IRMS = output current of root mean square value = 5 A

∴ PMMC Reading would be

IDC = (2 × 5) ⁄ π = 3.18 A

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