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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The flow which neglects changes in a transverse direction is known as

steady flow
turbulent flow
uniform flow
one dimensional flow

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Hydraulics & Fluid Mechanics
The region between the separation streamline and the boundary surface of the solid body is known as

drag
wake
boundary layer
lift

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

0.611
0.707
0.855
1.00

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Hydraulics & Fluid Mechanics
Separation of flow occurs when

the pressure intensity reaches a minimum
the cross-section of a channel is reduced
All of these
the boundary layer comes to rest

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Hydraulics & Fluid Mechanics
For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be

600
675
337.5
300

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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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