when the iron loss and full load copper loss in a transformer are 900 w and 1600w respectively. the maximum efficiency occurs at ____ of full load ?
a. 25%
b. 50%
c. 75%
d. 100%
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Answer:
Maximum efficiency at = kVA X √( Wi / Wcu )
= kVA X √ ( 900 / 1600 ) = 75 % of full load.
Where Wi = iron loss, Wcu = copper loss.
Explanation: PIZ MARKE IT IN BRINLIST
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