The input frequency is 50 Hz. The ripple frequency in a 12 phase full wave rectifier is

The input frequency is 50 Hz. The ripple frequency in a 12 phase full wave rectifier is (A) 1200 Hz (B) 600 Hz (C) 100 Hz (D) 50 Hz 
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The input frequency is 50 Hz. The ripple frequency in a 12 phase full wave rectifier is 1200 Hz

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