Question

Calculate the fundamental component of source current in 1-Φ Full wave bridge rectifier for the load(Highly inductive) current=78 A.

(a) 78 A

(b) 45 A

(c) 69 A

(d) 13 A

I have been asked this question during an internship interview.

My question is taken from Solid-State Switching Circuits topic in portion Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Right choice is (a) 78 A

To explain I would say: The fundamental component of source current in 1-Φ Full wave bridge rectifier is Io. It is the r.m.s value of the source current. Is(r.m.s)=Io=78 A.