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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Two pipe systems can be said to be equivalent, when the following quantities are same

Flow and length
Friction loss and flow
Friction factor and diameter
Length and diameter

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine ___ with the increase in unit speed.

None of the listed here
Remain same
Decreases
Increases

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Hydraulics and Fluid Mechanics in ME
The value of mass density in kg-sec-V-m⁴ for water at 0°C is

1
100.9
101.9
1000

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Hydraulics and Fluid Mechanics in ME
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L - nH)H3
1.84(L - nH)H2
1.84(L - 0.1nH)H3/2
1.84(L - 0.1nH)H5/2

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Hydraulics and Fluid Mechanics in ME
The maximum thickness of boundary layer in a pipe of radius r is

r
r/2
2r

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Hydraulics and Fluid Mechanics in ME
The time oscillation of a floating body with increase in meatcentric height will be

Lower/higher depending on weight of body
Same
Lower
Higher

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