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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

center of pressure
center of gravity
center of buoyancy
metacentre

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Hydraulics and Fluid Mechanics in ME
The pitot tube is used to measure

stagnation pressure
dynamic pressure
static pressure
velocity at stagnation point

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Hydraulics and Fluid Mechanics in ME
The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

(8/15) Cd. 2g. H²
(8/15) Cd. 2g. H5/2
(8/15) Cd. 2g. H3/2
(8/15) Cd. 2g. H

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Hydraulics and Fluid Mechanics in ME
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

1/√2
1
43832
√2

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than 2
greater than unity
greater than 4
unity

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Hydraulics and Fluid Mechanics in ME
When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called

Principle of flotation
Bernoulli’s theorem
Pascal’s law
Archimedes’s principle

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