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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 : 5
1 : 2.5
1:50

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Hydraulics & Fluid Mechanics
Which of the following instrument can be used for measuring speed of an aeroplane

Venturimeter
Orifice plate
rotameter
pitot tube

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Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific gravity
specific weight
specific speed
specific volume

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

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

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

Micro-manometer
Bourdon tube
Pirani Gauge
ionisastion gauge

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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

as the square of the radial distance
linearly with radial distance
inversely as the square of the radial distance
inversely as the radial distance

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