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Power Electronics

Q1:

A single phase half wave controlled rectifier circuit has an R-L load. A freewheeling diode is also in the circuit. When freewheeling diode is conducting the SCR

A is forward biased

B is reverse biased

C may be forward biased or reverse biased

D forward biased initially but reverse biased afterwards

ANS:B - is reverse biased

Free wheeling diode is forward biased only when SCR is reverse biased.



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