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A transformer with efficiency 90 works at 4 5 kW and 100 V If the...

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A transformer with efficiency 90 works at 4 5 kW and 100 V If the secondary voltage is 200 V then the primary and secondary currents are respectively 45 A 20 25 A 2 45 A 18 6 A 320 25 A 45 A 18 6 A 45 A 2 na are placed nam gram are

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