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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 :25
1:50
1 : 5
1 : 2.5

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Hydraulics & Fluid Mechanics
A fluid is said to be ideal, if it is

inviscous
inviscous and incompressible
incompressible
inviscous and compressible

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

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

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Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific weight
specific gravity
specific speed
specific volume

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

ionisastion gauge
Pirani Gauge
Bourdon tube
Micro-manometer

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Hydraulics & Fluid Mechanics
The peoperty by virtue of which a liquid opposes relative motion between its different layers is called

osmosis
viscosity
surface tension
co-efficient of viscosity

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