A 100 k VA, 2400 / 240V, 50 Hz single phase transformer has an exciting current of 0.64 A and a core loss of 700 watts, when its high-voltage side is energised at rated voltage and frequency. If load current is 40 A at 0.8 power factor of on the LV side then the primary current will be _______ A .

A 100 k VA, 2400 / 240V, 50 Hz single phase transformer has an excitin

1.	A 100 k VA, 2400 / 240V, 50 Hz single phase transformer has an exciting current of 0.64 A and a core loss of 700 watts, when its high-voltage side is energised at rated voltage and frequency. If load current is 40 A at 0.8 power factor of on the LV side then the primary current will be _______ A .
A.	4.58 A
B.	45 A
C.	45.8 A
D.	None of these
Answer» B. 45 A

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A 100 k VA, 2400 / 240V, 50 Hz single phase transformer has an exciting current of 0.64 A and a core loss of 700 watts, when its high-voltage side is energised at rated voltage and frequency. If load current is 40 A at 0.8 power factor of on the LV side then the primary current will be _______ A .

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