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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is

82.4 r.p.m.
248 r.p.m
24.8 r.p.m.
48.2 r.p.m

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant pressure, the speed capacity and power vary

Directly as the air or gas density
As square of density
Inversely as density
Inversely as square root of density

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Hydraulics and Fluid Mechanics in ME
Reynold's number is the ratio of the inertia force to the

Elastic force
Gravity force
Viscous force
Surface tension force

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Hydraulics and Fluid Mechanics in ME
A body floats in stable equilibrium

When its e.g. is below its center of buoyancy
When the metacentre is above e.g.
When its meatcentric height is zero
Metacentre has nothing to do with position of e.g. for determining stability

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Hydraulics and Fluid Mechanics in ME
A fluid having no viscosity is known as

Newtonian fluid
Ideal fluid
Non-Newtonian fluid
Real fluid

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Hydraulics and Fluid Mechanics in ME
Which of the following is the unit of kinematic viscosity

pascal
faraday
poise
stoke

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