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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Low specific speed of a pump implies it is

Mixed flow pump
Axial flow pump
Centrifugal pump
None of these

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Hydraulics and Fluid Mechanics in ME
A weir, generally, used as a spillway of a dam is

Broad crested weir
Submerged weir
Ogee weir
Narrow crested weir

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Hydraulics and Fluid Mechanics in ME
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is

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

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must satisfy

continuity equation
Newton’s law of viscosity
Pascal law
boundary layer theory

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Hydraulics and Fluid Mechanics in ME
The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is

(waV/g) × sin θ
(waV²/2g) × sin 2θ
(waV/2g) × sin θ
(waV²/g) × sin θ

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of rectangular section will be maximum, if

Its breadth is thrice the depth
Its depth is thrice the breadth
Its depth is twice the breadth
Its breadth is twice the depth

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