A step down chopper has Vs = 230 V and R = 10 . For a duty cycle of 0.4, the power taken by the chopper is 2097 Watts. Find the chopper efficiency. Take the voltage drop across the chopper switch as 2 V.

A step down chopper has Vs = 230 V and R = 10 . For a duty cycle of 0

1.	A step down chopper has Vs = 230 V and R = 10 . For a duty cycle of 0.4, the power taken by the chopper is 2097 Watts. Find the chopper efficiency. Take the voltage drop across the chopper switch as 2 V.
A.	98 %
B.	89.96 %
C.	99.14 %
D.	96.54 %
Answer» D. 96.54 %