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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?

1 : 2.5
1:50
1 :25
1 : 5

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Hydraulics & Fluid Mechanics
Two pipe systems are said to be equivalent when

length of pipe and discharge are same in two systems
friction factor and length are same in two systems
length and diameter are same in two systems
head loss and discharge are same in two systems

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

Bourdon tube
Micro-manometer
ionisastion gauge
Pirani Gauge

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

H5’4 where H is head.
H1/2
H5/2
H3’2

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Hydraulics & Fluid Mechanics
THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

SAME AS BUOYANT FORCE
NEGLIGIBLE
None of these
ZERO

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Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEW TONS/M
NEWTONS/M
NETON/M
NEWTONS

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