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.
Select an option to see the answer and solution.
Chemical Engineering · all questionsFluid Mechanics
Fluid Mechanics
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
745
Questions
2/38
Page
Pick an option on a question to see the right answer and solution.
The ratio of inertial forces to elastic forces is called the __________ number.
Select an option to see the answer and solution.
is called the __________ number.
Select an option to see the answer and solution.
The ratio of inertial forces to gravity forces is called the __________ number.
Select an option to see the answer and solution.
The ratio of pressure forces to inertial forces is called the __________ number.
Select an option to see the answer and solution.
Ratio of inertial forces to surface tension forces is called the __________ number.
Select an option to see the answer and solution.
The ratio of inertial forces to viscous forces is called the __________ number.
Select an option to see the answer and solution.
Cavitation in a centrifugal pump can be avoided by keeping the
Select an option to see the answer and solution.
Which of the following must be followed by the flow of a fluid (real or ideal)?
(I) Newton's law of viscosity.
(II) Newton's second law of motion.
(III) The continuity equation.
(IV) Velocity of boundary layer must be zero relative to boundary.
(V) Fluid cannot penetrate a boundary.
(I) Newton's law of viscosity.
(II) Newton's second law of motion.
(III) The continuity equation.
(IV) Velocity of boundary layer must be zero relative to boundary.
(V) Fluid cannot penetrate a boundary.
Select an option to see the answer and solution.
Cavitation in a centrifugal pump results from
Select an option to see the answer and solution.
Reciprocating pumps compared to centrifugal pumps
Select an option to see the answer and solution.
Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the
Select an option to see the answer and solution.
For pipes that must be broken at intervals for maintenance, the connector used should be a/an
Select an option to see the answer and solution.
With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)
Select an option to see the answer and solution.
Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an
Select an option to see the answer and solution.
While starting a centrifugal pump, its delivery valve should be kept
Select an option to see the answer and solution.
While starting an axial flow pump, its delivery valve should be kept
Select an option to see the answer and solution.
Pressure drag does not depend upon the
Select an option to see the answer and solution.
The equivalent diameter for pressure drop calculation for a duct of square cross-section is given by (where, x = each side of the square duct)
Select an option to see the answer and solution.
Which of the following is the most common pump for pumping either raw sewage or sludge?
Select an option to see the answer and solution.