Fluid Mechanics MCQs
Practice free Fluid Mechanics multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 815 questions — no login required.
Question 1hard
Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small.
Question 2hard
For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance).
Question 3hard
Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)
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Question 4hard
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.
Question 5hard
With increase in molecular weight of the gas, the head developed by a centrifugal compressor will
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Question 7hard
Pressure drop (Δp) for a fluid flowing in turbulent flow through a pipe is a function of velocity (V) as
Question 8hard
__________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm2.
Question 9hard
Pressure drop in a fluidised bed reactor is __________ that in a similar packed bed reactor.