A transformer carries 8 A current in the...

A transformer carries 8 A current in the primary of 100 turns. If the inpur power is 1kW, what should be the number of turns in the secondary to have a 500 V output?

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The correct Answer is:

400

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Transformer is a device used to increase or decrease the voltage in the transmission line according to requirement, Generally the input line voltage is fed in a primary coil and the output line voltage is obtained from the terminals of another coil In an ideal transformer, the primary and secondary coils are linked is such a way that there is no loss of magnetic flux and electrical energy. In an ideal transformer, if the number of turns and input voltage across the terminals of the primary coils be N_1 and V_1 , then the output voltage at the two terminals of the secondary coil V_2=V_1.N_2/N_1 , where N_2 is the number of turns in the secondary coil . In question (i) if the input power of the transformer be 44 W, then output power is

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