Fluid Mechanics MCQ
Test your knowledge with important Fluid Mechanics MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Fluid Mechanics MCQs on Bissoy. Bissoy App
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The value of critical Reynolds number for pipe flow is
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The unit of dynamic viscosity in SI unit is
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A stream line is
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Boundary layer separation occurs when the
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If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is
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Reynolds number for water flow through a tube of I.D. 5 cm is 1500. If a liquid of 5 centipoise viscosity and 0.8 specific gravity flows in the same pipe at the same velocity, then the pressure drop will
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Medium viscosity lubricating oil can be most ideally pumped by a __________ pump.
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Slurries can be most conveniently pumped by a __________ pump.
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The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a
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The unit of bulk modulus of elasticity for a liquid in S.I. unit is
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Water is flowing at 1 m/sec through a pipe (of 10 cm I.D.) with a right-angle bend. The force in Newtons exerted on the bend by water is
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__________ is an example of axial flow impeller.
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Rubber latex is an example of a __________ .fluid.
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Two dimensional stream function
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The most economical flow control valve for use with large diameter pipes is a
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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
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A fluid is pumped at the rate of 10 lb/sec to a height of 55 ft. The horse power required is __________ hp.
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Velocity distribution for flow between two fixed parallel plates
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C<sub>d</sub> is always __________ C<sub>c</sub>.
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The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke's law range is proportional to the
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Momentum transfer in laminar flow of fluids results due to the
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The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.
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For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively).
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What causes cavitation in centrifugal pump?
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Which law/principle of solid mechanics is similar/equivalent to Newton's law of viscosity in fluid mechanics?
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Volute type of casing is provided in a centrifugal pump to
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A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double
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Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around
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If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V = fluid velocity f = friction factor).
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Vane anemometer