Question

The ring shaped cores are made use of in the reduction of the secondary winding leakage reactance and secondary impedance.

(a) true

(b) false

This question was addressed to me in class test.

I want to ask this question from Design Principles in section Design of Current Transformers (CT) of Design of Electrical Machines

Answer 1

Right option is (a) true

The best I can explain: The secondary winding leakage reactance is directly proportional to the secondary impedance. The ring shaped cores around which the toroidal secondary windings of one or more layers are uniformly distributed.