Discussion
That machine supplies reactive power to the network of nearest
Answer: C
Correct answer: 255 kVAr
At 0.9 power factor the angle is 25.8 degrees, so \[ Q = S\sin\phi = 585 \times 0.436 = 255\ \mathrm{kVAr}. \] Because the power factor is leading, this reactive power is supplied to the network rather than drawn from it - the machine is acting as a capacitor of that rating while also doing its mechanical work.
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