Question
In: Mechanical Engineering
1) The flow rate of a liquid which is discharged by a pump is given by...
1) The flow rate of a liquid which is discharged by a pump is given by Q and the head is given by H. The specific gravity of the liquid which has a standard unit of kg/m2.s2, is denoted by SG. Using dimensional analysis, find the expression for pumping power (P) for this machine.
2) An axial pump has a rotor diameter of 32 cm. The pump
discharges water (ρwater = 1000 kg/m3) at a rate of 2.5 m3/min
while rotating at 1450 RPM. The energy input to the pump is 120
J/kg and the overall efficiency is 78%. If a scale model of this
pump has a rotor diameter of 22 cm and rotates at 2900 RPM,
calculate:
(i) flow rate of water in the model pump;
(ii) change in total pressure from the model pump; and
(iii) input power to the model pump.
Solutions
samet mamat answered 4 months agoRelated Solutions
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Multiple Choice
12 equal payments of $600 beginning at the end of Year 1.
10 equal payments of $600 beginning immediately.
12 equal payments of $550 beginning immediately.
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1. We expect a cash flow of $80,000 in 85 days. Given a discount
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Data on the rate at which a volatile liquid will spread across a surface are in...
Data on the rate at which a volatile liquid will spread across a
surface are in the table. Complete parts a through c.
Time (minutes) Mass (Pounds)
0 6.59
2 6.09
4 5.43
6 4.87
8 4.41
10 4.05
12 3.57
14 3.14
16 2.81
18 2.45
20 2.22
25 1.49
30 1.02
45 0.14
60 0.00
a. Find a 90% confidence interval for the mean mass of all
spills with an elapsed time of 32 minutes. Interpret the
result....
Data on the rate at which a volatile liquid will spread across a surface are in...
Data on the rate at which a volatile liquid will spread across a
surface are in the table. Complete parts
athrough
c.
Time(Minutes): 0,2,4,6,8,10,12,14,16,18,20,25,30,45,60
Mass (Pounds): 6.62, 5.96, 5.47, 4.85, 4.38, 4.05, 3.61, 3.09,
2.74 ,2.48, 2.23, 1.56, 0.94, 0.18, 0.00
Find a 98% confidence interval for the mean mass of all spills
with an elapsed time of 56minutes. Interpret the result.
What is the confidence interval?
( ),( )
(Round to three decimal places as needed.)
Interpret the result. Choose the...
Data on the rate at which a volatile liquid will spread across a surface are in...
Data on the rate at which a volatile liquid will spread across a
surface are in the table. Complete parts a through
c.
Time (minutes)
Mass (Pounds)
0
6.73
2
5.97
4
5.44
6
4.98
8
4.51
10
3.93
12
3.56
14
3.06
16
2.87
18
2.42
20
2.21
25
1.47
30
1.02
45
0.12
60
0.00
a. Find a 99%confidence interval for the mean mass of all spills
with an elapsed time of 34 minutes. Interpret the result.
What...
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deep.
1. Estimate the volumetric flow rate (m3/s) in the
pipe if the pump can move the methanol at a rate of 80.6 L/min
through this pipe.
2. Estimate the average velocity in the pipe (m/s) if the...
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