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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

3.0 m
4.0 m
2.4 m
2.5 m

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Hydraulics and Fluid Mechanics in ME
A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

None of these
Coincides with
Lies below
Lies above

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Hydraulics and Fluid Mechanics in ME
The viscosity of a gas

is independent of pressure for very high pressure intensities
is independent of temperature
decreases with increase in temperature
increases with increase in temperature

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Hydraulics and Fluid Mechanics in ME
With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on

a streamlined body
a sphere
a cylinder
a circular disc of plate held normal to flow

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Hydraulics and Fluid Mechanics in ME
Practical fluids

possess all the above properties
are viscous
possess surface tension
are compressible

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