Answer / surendar

1)same polarity
2)must be same impedance voltage
3)transform ratio must be same
i.e V1/V2=I2/I1=N1/N2=1/K
4)same vector group & phase squence must be same
5)same make

EXPLAIN THE FOLLWING: (1) BANDWIDTH (2) SELECTIVITY (3) RESONANT FREQUENCY (4) CURRENT MAGNIFICATION

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