A) 45 V
B) 15 V
C) 90 V
D) 300 V
Correct Answer: A
Solution :
\[\frac{{{V}_{s}}}{{{V}_{p}}}=\frac{{{N}_{s}}}{{{N}_{p}}}=k\Rightarrow \frac{{{V}_{s}}}{30}=\frac{3}{2}\Rightarrow {{V}_{s}}=45\ V\]
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