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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEWTONS
NEWTONS/M
NETON/M
NEW TONS/M

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Hydraulics & Fluid Mechanics
The discharge through a V- notch varies as

H3’2
H1/2
H5’4 where H is head.
H5/2

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

viscosity
cohesion
surface tension
friction

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Hydraulics & Fluid Mechanics
Coefficient of velocity for Borda’s mouth piece running full is

0.611
1.00
0.855
0.707

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Hydraulics & Fluid Mechanics
Surface energy per unit area of a surface is numerically equal to

force of cohesion
atmospheric pressure
force of adhesion
surface tension

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

at e.g. of body
at metacentre
at center of pressure
vertically upwards

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