For a power transformer operating at full load it draws voltage and cu – McqOptions

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1.	For a power transformer operating at full load it draws voltage and current equal to 200 V and 100 A respectively at 0.8 pf. Iron and copper losses are equal to 120 kW and 300kW. What is the efficiency?
A.	86.44%
B.	96.44%
C.	97.44%
D.	99.12%
Answer» D. 99.12%

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