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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The discharge through a siphon spillway is

Cd × a × √(2gH)
Cd × a × √(2g) × H2
Cd × a × √(2g) × H3/2
Cd × a × √(2g) × H5/2

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Double
Sixteen times
Four times
Eight times

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Hydraulics and Fluid Mechanics in ME
In order to measure the flow with a Venturimeter, it is installed in

Any direction and in any location
Inclined line with flow upwards
Inclined line with flow downwards
Horizontal line

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Hydraulics and Fluid Mechanics in ME
Density of water is maximum at

100°C
4°C
0°K
0°C

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Hydraulics and Fluid Mechanics in ME
If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

H = Hg/hf
H = Hg + hf
H = Hg - hf
H = Hg × hf

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Hydraulics and Fluid Mechanics in ME
The specific gravity of an oil whose specific weight is 7.85 kN/m3, is

1
0.8
1.2
1.6

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