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Hydraulics & Fluid Mechanics

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

specific density
specific gravity
specific mass
specific weight

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Hydraulics & Fluid Mechanics
For a floating body to be in equilibrium

All of these
center of buoyancy and e.g. must lie on same vertical plane
meta center should be above e.g.
a righting couple should be formed

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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
A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

50 m/sec
2 m/sec
10 m/sec
25 m/sec

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Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEW TONS/M
NETON/M
NEWTONS
NEWTONS/M

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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
inversely as the radial distance
as the square of the radial distance

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