Fluid Mechanics - Study Mode
[#431] Pressure drop in a fluidised bed reactor is __________ that in a similar packed bed reactor.
Correct Answer
(B) More than
[#432] The terminal velocity of a small sphere settling in a viscous fluid varies as the
Correct Answer
(B) Inverse of the fluid viscosity
Explanation
Solution: The terminal velocity of a small sphere settling in a viscous fluid is given by Stokes' law for low Reynolds numbers, which is expressed as: v = (2/9) * (r² * g * (ρ_s - ρ_f)) / μ Here: v = terminal velocity r = radius of the sphere g = acceleration due to gravity ρ_s = density of the sphere ρ_f = density of the fluid μ = dynamic viscosity of the fluid From the equation, it is evident that the terminal velocity is inversely proportional to the viscosity of the fluid (μ). A higher viscosity results in lower terminal velocity, while a lower viscosity increases the terminal velocity. Thus, the terminal velocity varies as the inverse of the fluid viscosity.
[#433] Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.
Correct Answer
(A) 2 to 3
[#434] Small pressure differences in liquids is measured using a/an
Correct Answer
(B) Inclined tube manometer
[#435] Bernoulli's equation accounts for the
Correct Answer
(C) Different forms of mechanical energy