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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which

Develops unit power under unit head
Develops unit power under unit speed
Delivers unit discharge under unit head
Delivers unit discharge under unit speed

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Hydraulics and Fluid Mechanics in ME
Kinematic viscosity is equal to

density/dynamic viscosity
dynamic viscosity/density
dynamicviscosity x density
1/dynamicviscosity x density

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately

5 mm
20 mm
30 mm
10 mm

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Hydraulics and Fluid Mechanics in ME
The motion of air mass in a tornado is a

free vortex motion
forced vortex motion
free vortex at center and forced vortex outside
forced vortex at center and free vortex outside

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Hydraulics and Fluid Mechanics in ME
The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.

Difference
Product
None of these
Sum

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