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. 0.04πgH/3 4πg/3 0.01πgH/4 0.01πgH/8 0.04πgH/3 4πg/3 0.01πgH/4 0.01πgH/8 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The hydrodynamic and thermal boundary layers will merge, when Schmidt number tends to infinity Prandtl number is one Archimedes number is greater than 10000 Nusselt number tends to infinity Schmidt number tends to infinity Prandtl number is one Archimedes number is greater than 10000 Nusselt number tends to infinity ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Drag force acting on a body does not depend upon the Density of the body Density of the fluid Projected area of the body Velocity of the body Density of the body Density of the fluid Projected area of the body Velocity of the body ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The speed of sound in an ideal gas varies as the Temperature Density None of these Pressure Temperature Density None of these Pressure ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is HW/2(H + W)² 2HW/(H + W)² HW/4(H + W)² √(HW/π) HW/2(H + W)² 2HW/(H + W)² HW/4(H + W)² √(HW/π) ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). Q₁ = Q₂ = Q₃ F = f₁ + f₂ + f₃ V₁ = V₂ = V₃ Q = Q₁ + Q₂ + Q₃ Q₁ = Q₂ = Q₃ F = f₁ + f₂ + f₃ V₁ = V₂ = V₃ Q = Q₁ + Q₂ + Q₃ ANSWER DOWNLOAD EXAMIANS APP
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