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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEWTONS/M
NEWTONS
NEW TONS/M
NETON/M

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Hydraulics & Fluid Mechanics
THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

0.611
1.01
0.95
0.86

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Hydraulics & Fluid Mechanics
Pressure of the order of 10''' torr can be measured by

Micro-manometer
Bourdon tube
ionisastion gauge
Pirani Gauge

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Hydraulics & Fluid Mechanics
The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)

H/2
H/3
2 H/3
2 H/5

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

the height of barometer will be less
it is the best liquid
its vapour pressure is so low that it may be neglected
both (B) and (C)

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Hydraulics & Fluid Mechanics
The discharge of a liquid of kinematic viscosity 4 cm²/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is

TURBULENT FLOW
LAMINAR FLOW
NOT PREDICTABLE FROM THE GIVEN DATA
TRANSITION FLOW

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