liquid is pumped from a ground level reservoir to an overhead tank through a 5 cm ID pipe as shown in Fig. (1): i. What pressure developed by the pump to supply water to the tank at the rate of 245 1/min? ii. What is the power required for the pump, if the pump is only 62% efficient? iii. Calculate the available NPSH. If the

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Q1/
liquid is pumped from a ground level
reservoir to an overhead tank through a 5
cm ID pipe as shown in Fig. (1):
i. What pressure developed by the pump to
45° elbow
8 m
Fig. (1)
Globe
valve
Tank
5 m
supply water to the tank at the rate of
245 I/min?
ii. What is the power required for the pump,
if the pump is only 62% efficient?
iii. Calculate the available NPSH. If the
pump required 12 m NPSH is it suitable to prevent cavitation for this system? why?
Given that: u = 0.0016 Pa.s; p 850 kg/m', e/d 0.0035, (Le/d) of Globe valve (open) = 240
(Le/d) of 45° ēlbow = 24 and Pv = 36.6 kPa
25 m
45°
Reservoir
45° elbow
Transcribed Image Text:Q1/ liquid is pumped from a ground level reservoir to an overhead tank through a 5 cm ID pipe as shown in Fig. (1): i. What pressure developed by the pump to 45° elbow 8 m Fig. (1) Globe valve Tank 5 m supply water to the tank at the rate of 245 I/min? ii. What is the power required for the pump, if the pump is only 62% efficient? iii. Calculate the available NPSH. If the pump required 12 m NPSH is it suitable to prevent cavitation for this system? why? Given that: u = 0.0016 Pa.s; p 850 kg/m', e/d 0.0035, (Le/d) of Globe valve (open) = 240 (Le/d) of 45° ēlbow = 24 and Pv = 36.6 kPa 25 m 45° Reservoir 45° elbow
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