In a 3 phase semiconverter, the freewheeling diode comes into operation only if firing angle-A-is zeroB-is 60°C-is more than 60°D-is more than 90°-C-is more than 60°

Question

In a 3 phase semiconverter, the freewheeling diode comes into operation only if firing angle-A-is zeroB-is 60&deg;C-is more than 60&deg;D-is more than 90&deg;-C-is more than 60&deg;

APTITUDE CRACK · Accepted Answer

C is more than 60&deg; In a three phase system, free wheeling diodes operate whenever the system suddenly turns off. In three phase operating more than 60 degrees switch the system in a nonconducting state.

Power Electronics - Engineering

In a 3 phase semiconverter, the freewheeling diode comes into operation only if firing angle

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Power Electronics - Engineering

In a 3 phase semiconverter, the freewheeling diode comes into operation only if firing angle

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