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Hydraulics and Fluid Mechanics in ME

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 discharge through a siphon spillway is

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

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Hydraulics and Fluid Mechanics in ME
A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

None of these
3.53 kN
35.3 kN
33.3 kN

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Hydraulics and Fluid Mechanics in ME
The speed of sound in a ideal gas varies directly as its

density
modulus of elasticity
temperature
absolute temperature

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Hydraulics and Fluid Mechanics in ME
The major loss of energy in long pipes is due to

gradual contraction or enlargement
sudden enlargement
friction
sudden contraction

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Hydraulics and Fluid Mechanics in ME
In a venturi-flume, the flow takes place at

Absolute pressure
Atmospheric pressure
Gauge pressure
None of these

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