A step down chopper has Vs = 230 V and R = 10 Ω. 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.

Question

A step down chopper has Vs = 230 V and R = 10 Ω. 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.

1 Answer

hutan · Answer 1 · 2022-10-07T19:58:32+0000

Correct answer is (c) 99.14 %

The explanation: Vo (rms) = √0.4 x (230 – 2) = 144.2 V

Po = 144.2^2/10 = 2079.3 Watts

Pi = 2097 Watts

η = Po/Pi = 99.14 %.

A step down chopper has Vs = 230 V and R = 10 Ω. 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.

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