Question

In a voltage commutated chopper circuit, the capacitor C can be charged to Vs by

(a) gating T1

(b) gating TA

(c) closing the switch

(d) both gating TA and closing the switch

I got this question by my college professor while I was bunking the class.

My doubt stems from Thyristor Chopper Circuits topic in chapter Choppers of Power Electronics

Answer 1

The correct choice is (d) both gating TA and closing the switch

The explanation is: When switch is closed, the C gets charged through Vs, C, Switch. When TA is triggered C gets charged through Vs, C, TA and the load.