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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For very great pressures, viscosity of moss gases and liquids

increases
remains same
shows erratic behaviour
decreases

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Hydraulics and Fluid Mechanics in ME
The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is

8 km
20 km
4 km
32 km

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Pascal’ law
Newton’s law of viscosity
Continuity equation
Newton’s law of motion

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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

Stagnation pressure
Drag
Lift
Bulk modulus

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Hydraulics and Fluid Mechanics in ME
In a centrifugal pump, the regulating valve is provided on the

Impeller
Casing
Delivery pipe
Suction pipe

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Hydraulics and Fluid Mechanics in ME
Which of the following velocity potentials satisfies continuity equation ?

x2-y2
x2 + y2
cosx
x2y

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