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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Air vessels in reciprocating pump are used to

Increase pump efficiency
Reduce acceleration to minimum
Smoothen flow
Save pump from cavitations

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Hydraulics and Fluid Mechanics in ME
Dimensions of surface tension are

ML°T⁻²
ML°T
ML r²
ML²T²

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

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

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Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be

Horizontal
Steep
First rise and then fall
Nearly horizontal

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Hydraulics and Fluid Mechanics in ME
When the Mach number is more than 6, the flow is called

Hyper-sonic flow
Sonic flow
Sub-sonic flow
Super-sonic flow

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Hydraulics and Fluid Mechanics in ME
The horizontal component of buoyant force is

None of these
Same as buoyant force
Negligible
Zero

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