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In a 3-phase converter circuit during commutation when one SCR in one phase is turned on to turn-off an SCR

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In a 3-phase converter circuit during commutation when one SCR in one phase is turned on to turn-off an SCR in another phase, results in

(A) voltage notching (B) harmonic distortion

(C) voltage sag (D) voltage swell
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In a 3-phase converter circuit during commutation when one SCR in one phase is turned on to turn-off an SCR in another phase, results in voltage notching

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