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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 | |