A 100 kw three phase delta connected motor works on a supply of three phase 3.3 kv. The motor efficiency is 92% and the power factor is 90%. The line current drawn by the motor will be
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21 amps is the answer
effeciency =output/ Input power
0.92= 100Kw/ Input power
input power= 108.6kw
now we know that Power = root 3 x V× I x Cos
i = 108.6/1.732×3.3×0.9
I=21.1 Amps
root 3 value is 1.732
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