A) \[63.8%\]
B) \[83.3%\]
C) \[16.7%\]
D) \[36.2%\]
Correct Answer: B
Solution :
Power of source \[=EI=240\times 0.7=166\]\[\Rightarrow \]Efficiency \[=\frac{140}{166}\Rightarrow \eta =83.3%\]You need to login to perform this action.
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