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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of water in S.I. units is taken as

9.81 kN/m3
9.81 × 10-6 N/mm3
9.81 × 103 N/m3
Any one of these

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit discharge of wheel is

1.5 m3/s
2.5 m3/s
0.25 m3/s
0.5 m3/s

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Hydraulics and Fluid Mechanics in ME
The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.

Same
Higher
None of these
Lower

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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

2ρ ω2 r2
ρ ω2 r2/2
ρ ω2 r2/4
ρ ω2 r2

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Hydraulics and Fluid Mechanics in ME
The unit speed of the turbine runner is

N/H
N/H²
N/√H
N/H3/2

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Hydraulics and Fluid Mechanics in ME
Newton's law of viscosity is a relationship between

Shear stress and velocity
Rate of shear strain and temperature
Pressure, velocity and temperature
Shear stress and rate of shear strain

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