Question

What is the formula for current in each conductor?

(a) current in each conductor = kVA * 10^3 * 3 * voltage per phase

(b) current in each conductor = kVA / 10^3 * 3 * voltage per phase

(c) current in each conductor = kVA * 10^3 / 3 * voltage per phase

(d) current in each conductor = kVA * 10^3 * 3 / voltage per phase

I got this question by my college professor while I was bunking the class.

This intriguing question comes from Armature Design topic in division Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Right option is (c) current in each conductor = kVA * 10^3 / 3 * voltage per phase

To explain I would say: The kVA output is first obtained from the operation of the machine. Next the voltage per phase is calculated to obtain the current in each conductor.