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 244medium
The head loss due to sudden contraction is proportional to
Question 245medium
With increase in the shear rate, the apparent viscosity of pseudoplastic fluids
Question 246hard
Boundary layer separation is characterised by one of the conditions given below, where 'Re' is the Reynolds number for the flow. Select the appropriate conditions.
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Question 247hard
For the same terminal conditions and fitting size, the least friction loss is incurred in a/an
Question 248hard
The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is
Question 249medium
The fluid property, due to which, mercury does not wet the glass is
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Question 250hard
The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the
Question 251hard
The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the
Question 252medium
The vent valve provided in a liquid handling centrifugal pump is