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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

Venturimeter
rotameter
hot wire anemometer
pitot tube

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Hydraulics and Fluid Mechanics in ME
The horizontal component of buoyant force is

Negligible
Zero
None of these
Same as buoyant force

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Hydraulics and Fluid Mechanics in ME
The depth ā€˜d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow)

0.423 D
0.577 D
0.223 D
0.707 D

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Hydraulics and Fluid Mechanics in ME
Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as

Drag
Stagnation pressure
Bulk modulus
Lift

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Hydraulics and Fluid Mechanics in ME
The flow in a pipe is neither laminar nor turbulent when Reynold number is

None of these
More than 2800
Between 2000 and 2800
Less than 2000

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Hydraulics and Fluid Mechanics in ME
A fluid which obeys the Newton's law of viscosity is termed as

Newtonian fluid
Real fluid
Ideal fluid
Non-Newtonian fluid

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