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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NETON/M
NEW TONS/M
NEWTONS
NEWTONS/M

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

dissolved air
dissolved salt
suspended matter
All of these

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Hydraulics & Fluid Mechanics
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

remain same
decrease
increase/decrease depending on depth of immersion
increase

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Hydraulics & Fluid Mechanics
Free surface of a liquid tends to contract to the smallest possible area due to force of

surface tension
viscosity
cohesion
friction

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Hydraulics & Fluid Mechanics
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if

the area is inclined
the area is horizontal
All of these
the area is vertical

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

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