Question

Calculate power absorbed by 10 Ω load in 3-∅ 180° VSI if the value of DC supply is 36 V.

(a) 20.6 W

(b) 24.5 W

(c) 26.4 W

(d) 28.8 W

This question was posed to me in an interview.

The query is from Solid-State Switching Circuits in portion Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Correct option is (d) 28.8 W

For explanation I would say: The power absorbed by 10 Ω load in 3-∅ 180° VSI if the value of DC supply is 36 V is Vph^2÷R=(22.6÷3)^2÷10=28.8 W.