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

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Hydraulics and Fluid Mechanics in ME
The Thomson's turbine is _________ reaction turbine.

An outward flow
A mixed flow
An axial flow
An inward flow

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Hydraulics and Fluid Mechanics in ME
Any change in load is adjusted by adjusting following parameter on turbine

Net head
Blade velocity
Flow
Absolute velocity

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Hydraulics and Fluid Mechanics in ME
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

(2/3) × Cd (L - nH) × √(2g) × H²
(2/3) × Cd (L - nH) × √(2gh)
(2/3) × Cd (L - 0.1nH) × √(2g) × H3/2
(2/3) × Cd (L - nH) × √(2g) × H5/2

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Hydraulics and Fluid Mechanics in ME
The velocity at which the laminar flow stops, is known as

Higher critical velocity
Velocity of approach
Lower critical velocity
None of these

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Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

Neutral
Unstable
Stable
None of these

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