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 109medium
Fanning friction factor equation applies to the __________ fluid flow.
Question 110medium
Most commonly used joint in the underground pipe lines is the
Question 111hard
Pascal's law is valid, only when the fluid is
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Question 112hard
Friction factor for a hydraulically smooth pipe at NRe = 2100 is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will
Question 113hard
Two piping system are said to be equivalent, when the __________ are same.
Question 114hard
The pressure at a point in a fluid is not the same in all directions, when the fluid is viscous and
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Question 115hard
In fluid flow, the stagnation point is defined as a point, where the __________ is zero.
Question 116hard
A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke's law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity
Question 117hard
A rectangular surface 3' x 4', has the lower 3 edge horizontal and 6' below a free oil surface (sp. gr. 0.8). The surface inclination is 300 with the horizontal. The force on one side of the surface is(where, y = specific weight of water)