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 19hard
Very small pressure difference (< 5 mm water coloumn) can be most conveniently measured by a/an __________ manometer.
Question 20hard
A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid.
Question 21hard
The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.
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Question 22medium
The ratio of inertial forces to elastic forces is called the __________ number.
Question 23hard
$$\frac{{{\text{N}}_{{\text{Re}}}^2}}{{{{\text{N}}_{{\text{Fr}}}}}}$$ is called the __________ number.
Question 24medium
The ratio of inertial forces to gravity forces is called the __________ number.
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Question 25medium
The ratio of pressure forces to inertial forces is called the __________ number.
Question 26medium
Ratio of inertial forces to surface tension forces is called the __________ number.
Question 27medium
The ratio of inertial forces to viscous forces is called the __________ number.