Question

What is the formula for step up chopper?

(a) V(1-α)

(b) V/(1-α)

(c) αV

(d) v/α

I have been asked this question in an online interview.

Question is taken from DC Motor Control Through Choppers topic in section Motor Control by Static Power Converters of DC Machines

Answer 1

Correct option is (b) V/(1-α)

Explanation: With the help of conventional chopper one can reduce the average voltage, so by doing slight modification in the circuit one can use chopper method to increase the average voltage applied, by the formula V/(1-α).