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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The force present in a moving liquid is

Inertia force
Gravity force
All of these
Viscous force

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Hydraulics and Fluid Mechanics in ME
A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is

20 kN
5kN
15 kN
lOkN

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Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to obtain

Pumping of viscous fluids
High discharge
High head and high discharge
High head

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Hydraulics and Fluid Mechanics in ME
Unit of surface tension is

Energy/unit area
Velocity/unit area
It has no units
Both of the above

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Hydraulics and Fluid Mechanics in ME
A structure used to dam up a stream or river over which the water flows is called

Weir
Orifice
Notch
Dam

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than 4
greater than unity
greater than 2
unity

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