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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)

(1 - cos φ)/2
(1 + sin φ)/2
(1 - sin φ)/2
(1 + cos φ)/2

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Hydraulics and Fluid Mechanics in ME
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

16μvl/wd²
4μvl/wd²
32μvl/wd²
8μvl/wd²

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Hydraulics and Fluid Mechanics in ME
The pressure at a point in a fluid will not be same in all the directions when the fluid is

inviscous and moving
viscous and moving.
viscous
moving

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Hydraulics and Fluid Mechanics in ME
Differential manometer is used to measure

Pressure in pipes, channels etc.
Difference of pressure between two points
Atmospheric pressure
Very low pressure

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Hydraulics and Fluid Mechanics in ME
A fluid of kinematic viscosity 0.4 cm²/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be

1.5 m/sec
2 m/sec
1 m/sec
less than 1 m/sec

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Hydraulics and Fluid Mechanics in ME
The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.

Decreases
None of these
Remain same
Increases

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