A transformer is used to reduce the main supply of 220V to 22V. If the currents in the primary and secondary are 2A and 15 A respectively, then the ef

Question

A transformer is used to reduce the main supply of 220V to 22V. If the currents in the primary and secondary are 2A and 15 A respectively, then the ef

A transformer is used to reduce the main supply of 220V to 22V. If the currents in the primary and secondary are 2A and 15 A respectively, then the efficiency of the transformer is
A. 0.65
B. 0.75
C. 0.8
D. 0.9

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
`eta = (V_(S)I_(S))/(V_(P)I_(P)) xx 100 = 22/220 xx 15/2 xx 100 = 75%`.

4 views Answered 2023-02-05 15:29