Hydraulics and Fluid Mechanics in ME
A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

Glass tube is cheaper than a metallic tube
It is not possible to conduct this experiment with any other tube
All of these
It is easier to see through the glass tube

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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-half its value when cylinder was full
one-fourth its value when cylinder was full

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