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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the submerged body is called

Reaction
Buoyancy
Metacentre
Up-thrust

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Continuity equation
Newton’s law of viscosity
Newton’s law of motion
Pascal’ law

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Hydraulics and Fluid Mechanics in ME
The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.

Remain same
None of these
Decreases
Increases

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Hydraulics and Fluid Mechanics in ME
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

wh
w/h
h/w
h

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Hydraulics and Fluid Mechanics in ME
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

wQHs
wQ (Hs + Hd)
wQ (Hs - Hd)
wQHd

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Hydraulics and Fluid Mechanics in ME
In a free vortex motion, the radial component of velocity everywhere is

maximum
minimum
non-zero and finite
zero

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