A voltage commutated chopper feeds power to an electric car (battery-powered). The battery voltage is 60 V. Starting current is 60 A and the SCR turn-off time is 20 s. Calculate the value of inductance (L) required for the commutating circuit.

A voltage commutated chopper feeds power to an electric car (battery-p

1.	A voltage commutated chopper feeds power to an electric car (battery-powered). The battery voltage is 60 V. Starting current is 60 A and the SCR turn-off time is 20 s. Calculate the value of inductance (L) required for the commutating circuit.
A.	400 H
B.	40 nH
C.	40 H
D.	0.4 mH
Answer» D. 0.4 mH