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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the elastic force is called

Mach number
Reynold's number
Froude's number
Weber's number

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

Partly immersed
Float over fluid
Be fully immersed with top surface at fluid surface
Sink to bottom

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Hydraulics and Fluid Mechanics in ME
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

9.75 m/sec²
9 m/sec
9.81 m/sec²
10 m/sec²

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Hydraulics and Fluid Mechanics in ME
Choose the wrong statement. Alcohol is used in manometer, because

It provides suitable meniscus for the inclined tube
Its vapour pressure is low
It provides longer length for a given pressure difference
Its density is less

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Hydraulics and Fluid Mechanics in ME
Puck up the wrong statement about centrifugal pump

Head a diameter
Head a speed²
Power a speed⁴
Discharge a diameter

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Hydraulics and Fluid Mechanics in ME
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.

Ax̅ / IG above
IG / Ax̅ above
IG / Ax̅ below
Ax̅ / IG below

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