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 325medium
The valve used for very remote and accurate control of fluid is a __________ valve.
Question 326hard
The terminal velocity of a particle moving through a fluid varies as dpn. What is the value of 'n' for Newton's law regime?
Question 327medium
Absolute viscosity of a fluid is a function of the __________ of the fluid.
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Question 328hard
A free jet of water of cross-sectional area 0.01 m2 and a velocity of 20 m/s strikes a plate and then flows in a plane parallel to the plate as shown in the figure below. The horizontal component of the force on the support is
Question 329hard
Which of the following relationship is valid for the equilibrium position of the float in a rotameter? (where, Df = Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)
Question 330hard
With increasing flow rate, the hydraulic efficiency of a centrifugal pump
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Question 331medium
Air vessel fitted to a reciprocating pump
Question 332hard
Hydraulic diameter for non-circular ducts is equal to __________ times the area of flow divided by the perimeter.
Question 333medium
Momentum correction factor used in fluid flow problems accounts for the