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Hydraulics & Fluid Mechanics

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

Pirani Gauge
Bourdon tube
Micro-manometer
ionisastion gauge

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Hydraulics & Fluid Mechanics
In which of the following the friction drag is generally larger than pressure drag?

a cylinder
a sphere
a circular disc or plate held normal to flow
an airfoil

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Hydraulics & Fluid Mechanics
A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of

4.2 M
4.6 M
4.8 M
4.0 M

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Hydraulics & Fluid Mechanics
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

specific density
specific mass
specific weight
specific gravity

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Hydraulics & Fluid Mechanics
The increase in meta centric height i) increases stability ii) decreases stability iii) increases comfort for passengers iv) decreases comfort for passengers The correct answer is

(i) and (iii)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

at metacentre
vertically upwards
at e.g. of body
at center of pressure

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