Hydraulics and Fluid Mechanics in ME A channel is said to be of most economical cross-section, if It gives maximum discharge for a given cross-sectional area and bed slope It involves lesser excavation for the designed amount of discharge All of these It has minimum wetted perimeter It gives maximum discharge for a given cross-sectional area and bed slope It involves lesser excavation for the designed amount of discharge All of these It has minimum wetted perimeter ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension) wd/4σ cosα σ cosα/4wd 4σ cosα/wd 4wd/σ cosα wd/4σ cosα σ cosα/4wd 4σ cosα/wd 4wd/σ cosα ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Cavitation is caused by weak material high pressure high velocity low pressure weak material high pressure high velocity low pressure ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The property by virtue of which a liquid opposes relative motion between its different layers is called Viscosity Osmosis Coefficient of viscosity Surface tension Viscosity Osmosis Coefficient of viscosity Surface tension ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Multistage centrifugal pumps are used to Pump viscous fluids All of these Produce high heads Give high discharge Pump viscous fluids All of these Produce high heads Give high discharge ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface) (IG/Ax̅) + x̅ (IG/Ax̅) - x̅ (IG/x̅) - Ax̅ (Ax̅/IG) + x̅ (IG/Ax̅) + x̅ (IG/Ax̅) - x̅ (IG/x̅) - Ax̅ (Ax̅/IG) + x̅ ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS