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 804easy
The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10-6 m2/s).
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Question 805easy
In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)
Question 807easy
As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1
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Question 809easy
A 2" gate valve fitted in a pipe is replaced by a similar globe valve. Pressure drop in gate valve was Δp. For the same discharge, the pressure drop across globe valve is
Question 810easy
If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V = fluid velocity f = friction factor).