Fluid Mechanics What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air. 0.01πgH/4 0.01πgH/8 0.04πgH/3 4πg/3 0.01πgH/4 0.01πgH/8 0.04πgH/3 4πg/3 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Power number is the ratio of Inertial stress to gravitational stress Drag stress to inertial stress Gravitational stress to drag stress Inertial stress to drag stress Inertial stress to gravitational stress Drag stress to inertial stress Gravitational stress to drag stress Inertial stress to drag stress ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The equivalent diameter for flow through a rectangular duct of width B and height H is HB/(H + B) 2HB/(H + B) 4HB/(H + B) HB/2(H + B) HB/(H + B) 2HB/(H + B) 4HB/(H + B) HB/2(H + B) ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length. None of these Transition Equivalent Prandtl mixing None of these Transition Equivalent Prandtl mixing ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Boundary layer separation occurs when the Cross-section of the channel is reduced Pressure reaches a minimum Valve is closed in a pipeline Velocity of sound is reached Cross-section of the channel is reduced Pressure reaches a minimum Valve is closed in a pipeline Velocity of sound is reached ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The Prandtl mixing length is Independent of the shear stress Zero at the pipe wall and is a universal constant Useful for computing laminar flow problems Independent of radial distance from the pipe axis Independent of the shear stress Zero at the pipe wall and is a universal constant Useful for computing laminar flow problems Independent of radial distance from the pipe axis ANSWER DOWNLOAD EXAMIANS APP
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