1.

In a transformer, the number of turns in primary coil and secondary coil are 5 and 4 respectively. If 240 V is applied on the primary coil, then the ratio of current in primary and secondary coil is    [AFMC 1998; CPMT 2000; Pb. PET 2002]

A.   4 : 5      
B.   5 : 4
C.   5 : 9      
D.   9 : 5
Answer» B.   5 : 4


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