Question

A three-phase full converter charges a battery from a three-phase supply of 230 V. Find the value of the power delivered to the load if a continues current of 20A is flowing through the battery of emf 200 V and internal resistance of 0.5 Ω.

(a) 0 W

(b) 5600 W

(c) 4200 W

(d) 1040 W

I had been asked this question by my school principal while I was bunking the class.

The origin of the question is Three Phase Converters-2 topic in portion Converters of Power Electronics

Answer 1

The correct answer is (c) 4200 W

For explanation I would say: Iavg = Irms = 20 A

P = E x Iavg + Irms^2 x R = 4200 W.