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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A fluid which obeys the Newton's law of viscosity is termed as

Non-Newtonian fluid
Ideal fluid
Real fluid
Newtonian fluid

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Hydraulics and Fluid Mechanics in ME
The velocity distribution for laminar flow through a circular tube

varies parabolically with maximum at the centre
is constant over the cross-section
varies linearly from zero at walls to maximum at centre
None of these

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Hydraulics and Fluid Mechanics in ME
A thick liquid like syrup has a ___ viscosity than a light liquid like water.

Same
Greater
None of the listed here
Lesser

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Hydraulics and Fluid Mechanics in ME
If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

H = Hg/hf
H = Hg + hf
H = Hg × hf
H = Hg - hf

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Hydraulics and Fluid Mechanics in ME
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to

Twice the depth
Half the depth
Twice the breadth
Half the breadth

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Hydraulics and Fluid Mechanics in ME
Reaction turbines are used for

Low head and high discharge
High head and low discharge
Low head
High head

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