A fan discharges 10,000 cfm of air through a duct 2 ft by 2ft against a static pressure of 0.90 in. of H₂O. The gage fluid density is 62 lbm/ft3 air temp. is 85°F and the barometric pressure is 28.7 in.Hgca). If the power input to the fan is measured as 3.6 Hp, What is the over-all mechanical eff'y of the fan?

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A fan discharges
10,000 cfm of air
through a duct 2 ft by 2ft against
a static pressure of 0.90 in. of H₂O.
The gage fluid density is 62 lbm/ft3
air temp. is 85°F and the barometric
pressure is 28.7 in. Hg). If the power
input to the fan is measured as 3.6 Hp,
what is the over-all mechanical eff'y of
the fan?
Transcribed Image Text:A fan discharges 10,000 cfm of air through a duct 2 ft by 2ft against a static pressure of 0.90 in. of H₂O. The gage fluid density is 62 lbm/ft3 air temp. is 85°F and the barometric pressure is 28.7 in. Hg). If the power input to the fan is measured as 3.6 Hp, what is the over-all mechanical eff'y of the fan?
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