Hydraulics and Fluid Mechanics in ME The value of coefficient of discharge is __________ the value of coefficient of velocity. Same as Less than None of these More than Same as Less than None of these More than ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Braking jet in an impulse turbine is used To break the jet of water To bring the runner to rest in a short time None of these To change the direction of runner To break the jet of water To bring the runner to rest in a short time None of these To change the direction of runner ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece) 0.5 a. √2gH 0.855 a. √2gH 0.707 a. √2gH √2gH 0.5 a. √2gH 0.855 a. √2gH 0.707 a. √2gH √2gH ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice) Q = Cd × a × 2gh Q = (Cd × a)/√(2gh) Q = (3Cd × a)/√(2h) Q = (2/3). Cd × a × h Q = Cd × a × 2gh Q = (Cd × a)/√(2gh) Q = (3Cd × a)/√(2h) Q = (2/3). Cd × a × h ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge 0.75 Q 1.5 Q Q/0.75 Same quantity of liquid 0.75 Q 1.5 Q Q/0.75 Same quantity of liquid ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The overall efficiency of a reaction turbine is the ratio of Actual work available at the turbine to the energy imparted to the wheel Work-done on the wheel to the energy (or head of water) actually supplied to the turbine Power produced by the turbine to the energy actually supplied by the turbine None of these Actual work available at the turbine to the energy imparted to the wheel Work-done on the wheel to the energy (or head of water) actually supplied to the turbine Power produced by the turbine to the energy actually supplied by the turbine None of these ANSWER DOWNLOAD EXAMIANS APP
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