Academics – Electro-Technology : 2019/MAR/04
Question
Q4. A three-phase electrical load of 800 Kw is operating at a power factor of 0.7 lagging. It is desired to improve the supply power factor to 0.92 lagging by connecting a synchronous motor driving a load of 200 Kw with an efficiency of 91 %.
Determine EACH of the following:
(a) The Kva of the synchronous motor; (12)
(b) The power factor of the synchronous motor. (4)
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