Hydraulics and Fluid Mechanics in ME The flow in a pipe is neither laminar nor turbulent when Reynold number is Less than 2000 None of these Between 2000 and 2800 More than 2800 Less than 2000 None of these Between 2000 and 2800 More than 2800 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch. 0.025 0.01 0.015 0.02 0.025 0.01 0.015 0.02 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called Continuity equation Pascal’s law Archimedes’s principle Bernoulli’s equation Continuity equation Pascal’s law Archimedes’s principle Bernoulli’s equation ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used? Pelton wheel with two or more nozzles Pelton wheel with one nozzle Francis turbine Kaplan turbine Pelton wheel with two or more nozzles Pelton wheel with one nozzle Francis turbine Kaplan turbine ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge) Q = (2/3) Cd × b × √(2g) × (H22 - H12) Q = (2/3) Cd × b × √(2g) × (H21/2 - H11/2) Q = (2/3) Cd × b × √(2g) × (H2 - H1) Q = (2/3) Cd × b × √(2g) × (H23/2 - H13/2) Q = (2/3) Cd × b × √(2g) × (H22 - H12) Q = (2/3) Cd × b × √(2g) × (H21/2 - H11/2) Q = (2/3) Cd × b × √(2g) × (H2 - H1) Q = (2/3) Cd × b × √(2g) × (H23/2 - H13/2) ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the Pressure head Pressure head - velocity head Pressure head + velocity head Velocity head Pressure head Pressure head - velocity head Pressure head + velocity head Velocity head ANSWER DOWNLOAD EXAMIANS APP
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