Q41
A fan ventilating a heading through a duct of 750mm diameter circulates 5m3s-1 of air at the face. Calculate the heat added to the air by the fan, if the input power of the fan is equal to 3kW.
A.
1667 J
B.
2617 J
AnswerC.
2917 J
D.
3317 J
Answer: Option B
Solution
Answer: Option B
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