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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific gravity
specific speed
specific volume
specific weight

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Hydraulics & Fluid Mechanics
The surface tension of mercury at normal temperature compared to that of water is

more
less
more or less depending on size of glass tube
same

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Hydraulics & Fluid Mechanics
A large Roynold number is indication of

highly turbulent flow.
turbulent flow
smooth and streamline flow
LAMINAR FLOW

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Hydraulics & Fluid Mechanics
For a floating body to be in stable equilibrium, its metacentre should be

above the center of buoyancy
above the center of gravity.
between e.g. and center of pressure
below the center of buoyancy

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Hydraulics & Fluid Mechanics
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is

9.81 m/sec²
10m/sec²
10.2/m sec
9.75 m/sec²

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Hydraulics & Fluid Mechanics
A fluid is said to be ideal, if it is

inviscous
inviscous and incompressible
inviscous and compressible
incompressible

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