Question

In the below given type C chopper circuit, ________ and ___________ together operate like type B chopper.

(a) CH1, FD

(b) CH2, FD

(c) CH1, D2

(d) CH2, D2

This question was posed to me in an interview for job.

This is a very interesting question from Type C Chopper topic in chapter Choppers of Power Electronics

Answer 1

The correct choice is (d) CH2, D2

For explanation: In the above shown type C chopper circuit, when CH2 is on current flows in the negative direction E-L-CH2-E and hence voltage is zero. When D2 operates E and L deliver power to the supply Vs hence, giving a type B chopper operation.