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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.

None of these
Concave
Convex
Plane

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Hydraulics and Fluid Mechanics in ME
The force per unit length is the unit of

Surface tension
Capillarity
Compressibility
Viscosity

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is

0.488
0.848
0.392
0.884

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Hydraulics and Fluid Mechanics in ME
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is

ρ ω2 r2/2
ρ ω2 r2
2ρ ω2 r2
ρ ω2 r2/4

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Hydraulics and Fluid Mechanics in ME
An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be

4 kN/m2
12 kN/m2
14 kN/m2
10 kN/m2

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Hydraulics and Fluid Mechanics in ME
Resultant pressure of the liquid in the case of an immersed body acts through

Metacentre
Centre of gravity
Centre of buoyancy
Centre of pressure

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