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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Weir
Nozzle
Mouthpiece
Notch

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than 2
greater than 4
unity
greater than unity

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Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Q/0.75
0.75 Q
Same quantity of liquid
1.5 Q

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Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water , the horse power required will be

1.5 B.H.P
0.75 B.H.P
H.P./0.75
Same

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Hydraulics and Fluid Mechanics in ME
Size of a venturimeter is specified by

pipe diameter
angle of diverging section
both pipe diameter as well as throat diameter
throat diameter

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Hydraulics and Fluid Mechanics in ME
The angle of taper on draft tube is

Greater than 15°
Greater than 8°
Greater than 5°
Less than 8°

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