Fluid Mechanics Quiz-1

Two and a half cumecs of water flows through a 50 cm diameter pipe. If the diameter is reduced 25 cm at constant discharge, what would be the mean velocity ?
12.73 m/s
10.12 m/s
50.95 m/s
40.72 m/s
An incompressible fluid is flowing through a contraction section of length L and has a 1–D (x–direction) steady state velocity distribution,u=u0(1+(2x/L)) . If u0 = 2m/s and L = 3 m, the convective acceleration (in m/s2 ) of the fluid at L is
8
6
42
2
If the pressure of a liquid is increased from 850 N/cm2 to 1500 N/cm2 , the volume of liquid is decreased by 0.18%. The bulk modulus of elasticity of liquid is ___________ GPa.
4.52
3.96
3.82
3.61
For flow of oil [μ = 0.1 kg/m-s, SG = 0.9] through a long, striaght smooth 5 cm diameter pipe at 14 m3 /hr, the pressure drop per meter is approximately
2200
2535
1000
1600
For flow of oil [μ = 0.1 kg/m-s, SG = 0.9] through a long, striaght smooth 5 cm diameter pipe at 14 m3 /hr the pressure drop per meter is approximately
80.79
75.32
68.25
52.89
0
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