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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Which of the following instrument can be used for measuring speed of an aeroplane

Venturimeter
Orifice plate
rotameter
pitot tube

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Hydraulics & Fluid Mechanics
The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)

H/3
2 H/5
2 H/3
H/2

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Hydraulics & Fluid Mechanics
Specific weight of sea water is more that of pure water because it contains

suspended matter
dissolved salt
All of these
dissolved air

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Hydraulics & Fluid Mechanics
Pressure of the order of 10''' torr can be measured by

Micro-manometer
Bourdon tube
Pirani Gauge
ionisastion gauge

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Hydraulics & Fluid Mechanics
Coefficient of velocity for Borda’s mouth piece running full is

0.855
0.707
0.611
1.00

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Hydraulics & Fluid Mechanics
When a body floating in a liquid, is displaced slightly, it oscillates about

e.g. of body
center of buoyancy
center of pressure
metacentre

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