Hydraulics and Fluid Mechanics in ME The efficiency of a Pelton wheel working under constant head ________ with the increase in power. Increases None of these Decreases Remain same Increases None of these Decreases Remain same ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The discharge in an open channel corresponding to critical depth is Maximum Minimum Zero None of these Maximum Minimum Zero None of these ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance) Cv × Cr Cc/Cr Cc × Cv Cc × Cr Cv × Cr Cc/Cr Cc × Cv Cc × Cr ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is dependent only on Reynolds number constant dependent on relative roughness only a function of Reynolds number and relative roughness dependent only on Reynolds number constant dependent on relative roughness only a function of Reynolds number and relative roughness ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME According to fan laws, at constant speed and capacity, the pressure and power vary As square of density Inversely as square root of density Directly as the air or gas density Inversely as density As square of density Inversely as square root of density Directly as the air or gas density Inversely as density ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME For small discharge at high pressure, following pump is preferred Axial flow Reciprocating Mixed flow Centrifugal Axial flow Reciprocating Mixed flow Centrifugal ANSWER DOWNLOAD EXAMIANS APP
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