GCC Factories Plant Engineering Exam
GCC Factories Engineer — Plant Engineering Examination (South Africa)
Electrical Technology PowerEnglish
Exam overviewPractice session
A 500 kVA, 11 kV / 400 V distribution transformer has a full-load copper loss of 4.5 kW and an iron loss of 2.5 kW. What is the efficiency of the transformer at full load operating at a power factor of 0.8 lagging?
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