Hydraulics and Fluid Mechanics in ME Which of the following statement is correct as regard to water wheels? They give constant efficiency, even if the discharge is not constant They are suitable even for low water heads All of these They have slow speeds They give constant efficiency, even if the discharge is not constant They are suitable even for low water heads All of these They have slow speeds ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME In an outward flow reaction turbine The water enters the wheel at the outer periphery and then flows towards the centre of the wheel The water enters at the centre of the wheel and then flows towards the outer periphery of the wheel The flow of water is partly radial and partly axial The water flows parallel to the axis of the wheel The water enters the wheel at the outer periphery and then flows towards the centre of the wheel The water enters at the centre of the wheel and then flows towards the outer periphery of the wheel The flow of water is partly radial and partly axial The water flows parallel to the axis of the wheel ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach) (2/3) Cd × L.√2g [H12 - Ha2] (2/3) Cd × L. √2g [H13/2 - Ha3/2] (2/3) Cd × L. √2g [H15/2 - Ha5/2] (2/3) Cd × L.√2g [H1 - Ha] (2/3) Cd × L.√2g [H12 - Ha2] (2/3) Cd × L. √2g [H13/2 - Ha3/2] (2/3) Cd × L. √2g [H15/2 - Ha5/2] (2/3) Cd × L.√2g [H1 - Ha] ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H). P/ H² P/ √H P/ H3/2 P/ H P/ H² P/ √H P/ H3/2 P/ H ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Dynamic viscosity of most of the liquids with rise in temperature Unpredictable Remain unaffected Decreases Increases Unpredictable Remain unaffected Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The liquid used in manometers should have Low density High surface tension High density Low surface tension Low density High surface tension High density Low surface tension ANSWER DOWNLOAD EXAMIANS APP
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