Question

The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then which of the following is correct?

(a) Turns ratio of the transformer is also 2

(b) Transformer is an ideal transformer

(c) It is a perfect transformer

(d) It is a perfect as well as an ideal transformer

I got this question during an interview.

I'd like to ask this question from Advanced Problems on Millman’s Theorem and Maximum Power Transfer Theorem in portion Useful Theorems in Circuit Analysis of Network Theory

Answer 1

The correct answer is (c) It is a perfect transformer

The best explanation: We know that, K = \(\frac{M}{\sqrt{L_1 L_2}}\)

= \(\frac{2}{\sqrt{2 X 2}}\) = 1

Hence, it is a perfect transformer.