Can Someone Help Me With This Question For Fan Efficiency In This Case Efficiency Is The Percentage Of The

Question

Can someone help me with this question for fan efficiency . In this case, efficiency is the percentage of the

electricity to operate the fan. I already did the calculations to get the efficiency ratings.

My first computation was 13.06% for the efficiency rating and my second computation was 9.37% for the efficiency rating. I did two computations just to see if I could detect unexpected results. I need help with the following steps:

Mechanical Engineering