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A transformer of efficiency 90% draws an input power of 4 kW. An electrical applience connected across the secondary draws a current of 6 A.The impedence of device
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Mar 20, 2022
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A transformer of efficiency 90% draws an input power of 4 kW. An electrical applience connected across the secondary draws a current of 6 A.The impedence of device is.........
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(a) `60Omega` (b) `50Omega` (c) `80Omega` (d) `100Omega`
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