A) 2.5A
B) 5A
C) 0.25A
D) 0.5A
Correct Answer: A
Solution :
In a transformer \[\eta =\frac{{{P}_{o}}}{{{P}_{i}}}\] \[\frac{50}{100}=\frac{{{V}_{s}}{{I}_{s}}}{{{V}_{p}}{{I}_{p}}}\] \[\frac{1}{2}=\frac{220\times {{I}_{s}}}{220}\times 5\] \[{{I}_{s}}=2.5\operatorname{A}\]You need to login to perform this action.
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