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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The units of viscosity are

kg sec/metre
metre2/se
newton-sec/metre2
newton-sec/metre

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Hydraulics & Fluid Mechanics
The line of action of the buoyant force acts through the

centroid of the volume of fluid vertically above the body
center of gravity of any submerged body
centriod of the displaced volume of fluid
center of the volume of floating body

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Hydraulics & Fluid Mechanics
When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies

inversely as the square of the radial distance
linearly with radial distance
as the square of the radial distance
inversely as the radial distance

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Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEWTONS
NEWTONS/M
NEW TONS/M
NETON/M

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Hydraulics & Fluid Mechanics
The region between the separation streamline and the boundary surface of the solid body is known as

wake
lift
drag
boundary layer

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Hydraulics & Fluid Mechanics
At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

maximum
could be any value
minimum
negative value

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