Hydraulics and Fluid Mechanics in ME
Euler's equation in the differential form for the motion of liquids is given by

dp/ρ + g.dz + v.dv = 0
ρ.dp + g.dz + v.dv = 0
dp/ρ - g.dz + v.dv = 0
ρ.dp - g.dz + v.dv = 0

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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

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

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Hydraulics and Fluid Mechanics in ME
Coefficient of contraction is the ratio of

Actual velocity of jet at vena contracta to the theoretical velocity
Loss of head in the orifice to the head of water available at the exit of the orifice
Area of jet at vena-contracta to the area of orifice
Loss of head in the orifice to the head of water available at the exit of the orifice

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