10
100
1000
10000
✅ The correct answer is option B.
Fluid Mechanics MCQs
Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively).
FL⁻²T, ML⁻¹T⁻¹
FLT, ML⁻¹T⁻¹
ML⁻¹T⁻³, F⁻¹L²T
F-1L²T⁻¹, MLT⁻³
✅ The correct answer is option A.
The head loss in turbulent flow in a pipe varies
Directly as the velocity
Inversely as the square of the velocity
Approximately as the square of the velocity
Inversely as the square of the diameter
✅ The correct answer is option C.
Draining of shallow pits or sump is done by a sump pump, which is a __________ pump.
Single stage vertical
Centrifugal
Plunger
Diffuser
✅ The correct answer is option A.
Power required for mixing Newtonion fluids is a function of the
Speed of impeller, diameter of impeller & viscosity
Density & viscosity of fluid only
Density of fluid, viscosity of fluid & impeller dia only
None of these
✅ The correct answer is option D.
At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump?
40° and 140°
45° and 60°
90° and 80°
20° and 120°
✅ The correct answer is option A.
Design of the casing of centrifugal pump should be such as to minimise the
Back flow through impeller
Loss of kinetic head
Loss of static head
None of these
✅ The correct answer is option B.
Experimental study of laminar fluid flow through a circular tube was conducted by
Reynolds
Hagen and Poiseuille
Pascal
Blake-Plummer
✅ The correct answer is option B.
Unsteady non-uniform flow is represented by flow through a/an
Long pipe at constant rate
Long pipe at decreasing rate
Expanding tube at increasing rate
Expanding tube at constant rate
✅ The correct answer is option C.
Existence of boundary layer in fluid flow is because of the
Surface tension
Fluid density
Fluid viscosity
Gravity forces
✅ The correct answer is option C.