# A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kW. If the current in the secondary coil is 10 A, the input voltage and current in the primary coil are : (a) 440 V and 5V (b) 220V and 20A (c) 220V and 10A (d) 440V and 20A

## Question ID - 51328 :- A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kW. If the current in the secondary coil is 10 A, the input voltage and current in the primary coil are : (a) 440 V and 5V (b) 220V and 20A (c) 220V and 10A (d) 440V and 20A

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Answer Key : (a) -

Power output (V2I2) = 2.2 kW

= 220 volts

Input voltage for step−down transformer

Vinput= 2 × Voutput =2 × 220

=440V

Also

×10=5A

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