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At relatively light load, transformer efficiency is low because
Secondary output is low
transformer losses are high
fixed loss is high in proportion to the output
Cu loss is small
fixed loss is high in proportion to the output
Quick Summary: Practice and solve "At relatively light load, transformer efficiency is low because..." for Electrical - Machine. The correct answer is Option C: fixed loss is high in proportion to the output. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Answer:
Option **(c) **