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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A Piezometer tube is used only for measuring

High pressure
Low pressure
Moderate pressure
Vacuum pressure

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Hydraulics and Fluid Mechanics in ME
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is

ρ ω2 r2/4
ρ ω2 r2/2
2ρ ω2 r2
ρ ω2 r2

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Hydraulics and Fluid Mechanics in ME
The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

High speed with radial flow at outlet
Medium speed with radial flow at outlet
High speed with axial flow at outlet
Slow speed with radial flow at outlet

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Hydraulics and Fluid Mechanics in ME
A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used?

Pelton wheel with one nozzle
Kaplan turbine
Pelton wheel with two or more nozzles
Francis turbine

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Hydraulics and Fluid Mechanics in ME
Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by

0.05
0.2
0.15
0.1

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Hydraulics and Fluid Mechanics in ME
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

Zero
Could be any value
Minimum
Maximum

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