Question

What is the range of current density in the windings of the current transformer?

(a) 1-3 A per mm^2

(b) 2-3 A per mm^2

(c) 1-2 A per mm^2

(d) 0.5-2 A per mm^2

I got this question in homework.

Question is taken from Turns Compensation in chapter Design of Current Transformers (CT) of Design of Electrical Machines

Answer 1

The correct answer is (c) 1-2 A per mm^2

To elaborate: The minimum value of the current density in the windings I A per mm^2. The maximum value of the current density is 2 A per mm^2.