A. copper loss becomes high in proportion to the output
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
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A. copper loss becomes high in proportion to the output
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
This Answer Is A
The efficiency of a transformer under heavy loads is comparatively low due to the higher copper loss in proportion to the output. This is due to the resistance of the windings, which causes a loss of energy as heat. Additionally, this loss can be attributed to a property called hysteresis, which refers to the losses of magnetization and demagnetization of the core. During short-circuit tests, iron losses are negligible and therefore do not contribute to the energy losses.