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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEW TONS/M
NEWTONS
NEWTONS/M
NETON/M

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

Micro-manometer
Pirani Gauge
Bourdon tube
ionisastion gauge

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Hydraulics & Fluid Mechanics
The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

always above the centroid of the area
None of these
at the centroid of the submerged area
always below the centroid of the area

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Hydraulics & Fluid Mechanics
The peoperty by virtue of which a liquid opposes relative motion between its different layers is called

co-efficient of viscosity
osmosis
viscosity
surface tension

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

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

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Hydraulics & Fluid Mechanics
The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)

uniform flow
incompressible flow
frictionless flow
steady flow

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