HB/2(H + B)
HB/(H + B)
2HB/(H + B)
4HB/(H + B)
✅ The correct answer is option C.
Fluid Mechanics MCQs
__________ is an example of axial flow impeller.
Paddle
Turbine
Propeller
All of the above
✅ The correct answer is option C.
The line traced by a single fluid particle as it moves over a period of time is called __________ line.
Stream
Path
Equipotential
None of these
✅ The correct answer is option B.
The Stoke’s stream function applies to the
Irrotational flow only
Ideal/non-viscous fluids only
Cases of axial symmetry
None of these
✅ The correct answer is option C.
Bernoulli’s equation accounts for the
Various momentums
Various masses
Different forms of mechanical energy
None of these
✅ The correct answer is option C.
For a given Reynold number as d/D for an orifice increases, Cd will (where, d & D are orifice & pipe diameters respectively).
Increase
Decrease
Remain constant
Either A or B; depends on other factors
✅ The correct answer is option A.
A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit (E) to deliver water at a flow rate of 0.001 m³/s? The Fanning friction factor, f is 0.0062.
10 m
11 m
12 m
20 m
✅ The correct answer is option B.
In area meter (e.g., rotameter), with increase in the fluid flow rate, the
Pressure drop increases linearly
Pressure drop is almost constant
Area through which fluid flows does not vary
None of these
✅ The correct answer is option B.
Choose the set of pressure intensities that are equivalent.
4.33 psi, 10 ft. of water, 8.83 inches of Hg
4.33 psi, 10 ft. of water, 20.7 inches of Hg
10 psi, 19.7 ft. of water, 23.3 inches of Hg
10 psi, 19.7 ft. of water, 5.3 inches of Hg
✅ The correct answer is option A.
Dimension of kinematic viscosity is
MLT⁻¹
L² . T⁻¹
L²T
L² . T⁻²
✅ The correct answer is option B.