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Power Electronics

Q1: A single phase semiconverter has a freewheeling diode. If the firing angle is a and the load is purely resistive, the periods of conduction and freewheeling respectively are

A
p - a and 0

B
p - a and a

C
p + a and 0

D
p + a and a

ANS:A -

p - a and 0

Freewheeling diode conducts only when load is inductive. If load is purely resistive free wheeling diode does not come into operation.



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