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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The most efficient section of a channel is

Triangular
Trapezoidal
Rectangular
Square

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Hydraulics and Fluid Mechanics in ME
The pressure measured with the help of a pressure gauge is called

Gauge pressure
Mean pressure
Absolute pressure
Atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
Centrifugal pump is started with its delivery valve

Irrespective of any position
Kept fully open
Kept fully closed
Kept 50% open

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Hydraulics and Fluid Mechanics in ME
One stoke is equal to

10-4 m2/s
10-3 m2/s
10-6 m2/s
10-2 m2/s

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Hydraulics and Fluid Mechanics in ME
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is

(v₁ - v₂)²/2g
(v₁² - v₂²)/g
(v₁² - v₂²)/2g
(v₁ - v₂)²/g

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the viscous force is called

Weber's number
Reynold's number
Euler's number
Froude's number

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