1.

In a transformer the number of turns of primary coil and secondary coil are 5 and 4 respectively. If 240V is applied to the primary coil the ration of current in primary coil and secondary coil is (A) 5: 4 (B) 5: 10 (C) 4: 5 (D) 8: 12

Answer»

Correct option is (C) 4: 5



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