# The efficiency of a transformer, under heavy loads, is comparatively low because _____ ? with Answer - Electrical Engineering Mcqs | TestPrep

> Solved MCQ: The efficiency of a transformer, under heavy loads, is comparatively low because _____ ? Correct Answer: A. copper loss becomes high in proportion to the output. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# The efficiency of a transformer, under heavy loads, is comparatively low because _____ ?

Direct Answer & Quick Reference

The correct option is **A. copper loss becomes high in proportion to the output**.

A. copper loss becomes high in proportion to the output **(Correct Answer)**

B. iron loss is increased considerably

C. voltage drop both in primary and secondary becomes large

D. secondary output is much less as compared to primary input

Verified Key: A. copper loss becomes high in proportion to the output
Solved by 4,597+ students

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