Fluid Mechanics The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is 2HW/(H + W)² HW/2(H + W)² HW/4(H + W)² √(HW/π) 2HW/(H + W)² HW/2(H + W)² HW/4(H + W)² √(HW/π) ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Very small pressure difference (< 5 mm water coloumn) can be most conveniently measured by a/an __________ manometer. U-tube mercury Inclined tube water U-tube water Inclined tube mercury U-tube mercury Inclined tube water U-tube water Inclined tube mercury ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics A differential pressure cell is used for Measuring small pressure difference in gases Remote recording of pressure difference Measuring the difference of the impact & the static pressure Measuring small pressure difference in liquids Measuring small pressure difference in gases Remote recording of pressure difference Measuring the difference of the impact & the static pressure Measuring small pressure difference in liquids ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Pressure gradient in the pipe flow is influenced by the All of these Velocity of the fluid Density & viscosity of the fluid Diameter of pipe All of these Velocity of the fluid Density & viscosity of the fluid Diameter of pipe ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The ratio of pressure forces to inertial forces is called the __________ number. Reynold Euler Froude Mach Reynold Euler Froude Mach 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). Q = Q₁ + Q₂ + Q₃ Q₁ = Q₂ = Q₃ V₁ = V₂ = V₃ F = f₁ + f₂ + f₃ Q = Q₁ + Q₂ + Q₃ Q₁ = Q₂ = Q₃ V₁ = V₂ = V₃ F = f₁ + f₂ + f₃ ANSWER DOWNLOAD EXAMIANS APP
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