Hydraulics and Fluid Mechanics in ME The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to Half the breadth Twice the breadth Twice the depth Half the depth Half the breadth Twice the breadth Twice the depth Half the depth ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Rain drops are spherical because of air resistance viscosity atmospheric pressure surface tension forces air resistance viscosity atmospheric pressure surface tension forces ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is 0.375 v₂²/2g v₁²/2g v₂²/2g 0.5 v₁²/2g 0.375 v₂²/2g v₁²/2g v₂²/2g 0.5 v₁²/2g 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) × (H2 - H1) Q = (2/3) Cd × b × √(2g) × (H21/2 - H11/2) Q = (2/3) Cd × b × √(2g) × (H22 - H12) Q = (2/3) Cd × b × √(2g) × (H23/2 - H13/2) Q = (2/3) Cd × b × √(2g) × (H2 - H1) Q = (2/3) Cd × b × √(2g) × (H21/2 - H11/2) Q = (2/3) Cd × b × √(2g) × (H22 - H12) Q = (2/3) Cd × b × √(2g) × (H23/2 - H13/2) ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME A differential manometer is used to measure Difference of pressures between two points in a pipe Atmospheric pressure Pressure in Venturimeter Pressure in pipes and channels Difference of pressures between two points in a pipe Atmospheric pressure Pressure in Venturimeter Pressure in pipes and channels ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME In reaction turbine, draft tube is used To increase flow rate For safety of turbine To convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section To transport water downstream without eddies To increase flow rate For safety of turbine To convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section To transport water downstream without eddies ANSWER DOWNLOAD EXAMIANS APP
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