Q32
A fan running at a speed of 280 rpm circulates 105 m3/s of air in a mine. If the power input to the motor for driving the fan is recorded to be 75 kW, with the combined efficiency of fan and motor at 70%. the fan pressure in Pa is
A.
50
B.
350
C.
500
AnswerD.
650
Answer: Option C
Solution
Answer: Option C
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