Hydraulics and Fluid Mechanics in ME If the surface of liquid is convex, men Cohesion pressure is decreased There is no cohesion pressure Cohesion pressure is negligible Cohesion pressure is increased Cohesion pressure is decreased There is no cohesion pressure Cohesion pressure is negligible Cohesion pressure is increased ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is (Assume that boundary layer is entirely laminar) 0.05 cm 0.40 cm 0.20 cm 0.10 cm 0.05 cm 0.40 cm 0.20 cm 0.10 cm ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s) waV² / g waV² / 2g waV / 2g waV / g waV² / g waV² / 2g waV / 2g waV / g ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is 27/8 43892 43924 44078 27/8 43892 43924 44078 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which Delivers unit discharge under unit head Delivers unit discharge under unit speed Develops unit power under unit speed Develops unit power under unit head Delivers unit discharge under unit head Delivers unit discharge under unit speed Develops unit power under unit speed Develops unit power under unit head ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Reynolds number is significant in All of these full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc supersonics, as with projectile and jet propulsion simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls All of these full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc supersonics, as with projectile and jet propulsion simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls ANSWER DOWNLOAD EXAMIANS APP
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