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/π
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