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प्रश्न
A step-down transformer reduces the supply voltage from 220 V to 11 V and increase the current from 6 A to 100 A. Then its efficiency is
पर्याय
1.2
0.83
0.12
0.9
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उत्तर
0.83
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संबंधित प्रश्न
Find the ratio of primary and secondary currents in terms of turn ratio in an ideal transformer.
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