Hydraulics and Fluid Mechanics in ME A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is 80 r.p.m. 10 r.p.m. 40 r.p.m. 20 r.p.m. 80 r.p.m. 10 r.p.m. 40 r.p.m. 20 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME If the surface of liquid is convex, men There is no cohesion pressure Cohesion pressure is decreased Cohesion pressure is increased Cohesion pressure is negligible There is no cohesion pressure Cohesion pressure is decreased Cohesion pressure is increased Cohesion pressure is negligible 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) 4σ cosα/wd wd/4σ cosα 4wd/σ cosα σ cosα/4wd 4σ cosα/wd wd/4σ cosα 4wd/σ cosα σ cosα/4wd ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The efficiency of a Pelton wheel working under constant head ________ with the increase in power. None of these Increases Remain same Decreases None of these Increases Remain same Decreases ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The pressure of liquid at throat in a Venturimeter is __________ than that at inlet. None of these Lower Higher Same None of these Lower Higher Same ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow. Less than Equal to None of these More than Less than Equal to None of these More than ANSWER DOWNLOAD EXAMIANS APP
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