Fluid Mechanics Questions

• The dimension of dynamic viscosity is
• Which of the following denotes the effect of compressibility in fluid flow?
• Schedule number of a pipe, which is a measure of its wall thickness, is given by
• Which of the following is not a dimension-less parameter?
• Dimension of surface tension is(where, F = force, L = length)
• In fluid flow, cavitation is caused, if the
• Head developed by a centrifugal pump depends on its
• All pipes of a particular nominal size have the same
• At high Reynolds number
• Water hammer in a pipeline results from the
• Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.
• Pressure drag does not depend upon the
• With increasing flow rate, the hydraulic efficiency of a centrifugal pump
• The fluid property, due to which, mercury does not wet the glass is
• In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of
• Pick out the wrong statement.
• For a particle settling in water at its terminal settling velocity, which of the following is true?
• The head loss in turbulent flow in a pipe varies
• Power loss in an orificemeter is __________ that in a venturimeter.
• The terminal velocity of a small sphere settling in a viscous fluid varies as the