Hydraulics and Fluid Mechanics in ME The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by [2(Vr + v) v]/ Vr² [(Vr + v) v]/ Vr [2(Vr - v) v]/ Vr² [(Vr - v) v]/ Vr [2(Vr + v) v]/ Vr² [(Vr + v) v]/ Vr [2(Vr - v) v]/ Vr² [(Vr - v) v]/ Vr ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The flow in a pipe or channel is said to be non-uniform when The liquid particles at all sections have the same velocities Each liquid particle has a definite path The quantity of liquid flowing per second is constant The liquid particles at different sections have different velocities The liquid particles at all sections have the same velocities Each liquid particle has a definite path The quantity of liquid flowing per second is constant The liquid particles at different sections have different velocities ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by Trimming the impeller size to the required size by machining Not possible Some other alterations in the impeller Designing new impeller Trimming the impeller size to the required size by machining Not possible Some other alterations in the impeller Designing new impeller ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME Reaction turbines are used for High head and low discharge Low head and high discharge High head Low head High head and low discharge Low head and high discharge High head Low head ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME An ideal flow of any fluid must fulfill the following Newton’s law of motion Pascal’ law Newton’s law of viscosity Continuity equation Newton’s law of motion Pascal’ law Newton’s law of viscosity Continuity equation ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is (Assume that boundary layer is entirely laminar) 0.40 cm 0.05 cm 0.20 cm 0.10 cm 0.40 cm 0.05 cm 0.20 cm 0.10 cm ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS