Hydraulics and Fluid Mechanics in ME According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies Directly as fan speed Cube of fan speed Square of fan speed Square root of fan speed Directly as fan speed Cube of fan speed Square of fan speed Square root of fan speed ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The hydraulic efficiency of a reaction turbine, is the ratio of Power produced by the turbine to the energy actually supplied by the turbine None of these Work-done on the wheel to the energy (or head of water) actually supplied to the turbine Actual work available at the turbine to energy imparted to the wheel Power produced by the turbine to the energy actually supplied by the turbine None of these Work-done on the wheel to the energy (or head of water) actually supplied to the turbine Actual work available at the turbine to energy imparted to the wheel ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME For hypersonic flow, the Mach number is greater than 2 greater than unity greater than 4 unity greater than 2 greater than unity greater than 4 unity 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 [H13/2 - Ha3/2] (2/3) Cd × L.√2g [H1 - Ha] (2/3) Cd × L. √2g [H15/2 - Ha5/2] (2/3) Cd × L.√2g [H12 - Ha2] (2/3) Cd × L. √2g [H13/2 - Ha3/2] (2/3) Cd × L.√2g [H1 - Ha] (2/3) Cd × L. √2g [H15/2 - Ha5/2] (2/3) Cd × L.√2g [H12 - Ha2] ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock) p/2sinα p/sinα 2p/sin (α/2) 2p/sinα p/2sinα p/sinα 2p/sin (α/2) 2p/sinα 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 v₂²/2g 0.375 v₂²/2g 0.5 v₁²/2g v₁²/2g v₂²/2g 0.375 v₂²/2g 0.5 v₁²/2g v₁²/2g ANSWER DOWNLOAD EXAMIANS APP
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