1.

An iron cored choke coil when connected to a 15 V DC supply draws a current of 1.5 A. When connected to 230 V, 50 hz supply, it takes 2 A current and consume 60 W. The iron loss in the core is:

A. 20 W
B. 40 W
C. 7.5 W
D. 10 W
Answer» B. 40 W


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