Hydraulics and Fluid Mechanics in ME
A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is

zero
cannot be predicted from the given data
one-fourth its value when cylinder was full
one-half its value when cylinder was full

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Hydraulics and Fluid Mechanics in ME
An orifice is said to be large, if

The velocity of flow is large
The available head of liquid is less than 5 times the height of orifice
The available head of liquid is more than 5 times the height of orifice
The size of orifice is large

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