671. Bernoull’s equation does not apply to the functioning of a/an
Venturimeter
Orificem
Pitot tube
None of these
✅ The correct answer is option D.
Fluid Mechanics MCQs
672. Terminal velocity is
A constant velocity with no acceleration
A fluctuating velocity
Attained after moving one-half of total distance
None of these
✅ The correct answer is option A.
673. Kinetic energy of fluid per unit weight represented by the velocity head is given by
2v²/gc
v²/2gc
ρv²/gc
ρ.v²/2gc
✅ The correct answer is option B.
674. The ratio of the depth of flow to the diameter of the channel for maximum discharge in a circular channel in open channel flow is
0.1
0.55
0.95
1.85
✅ The correct answer is option C.
675. Dean number is concerned with the
Fluid-particle interaction
Fluid flow through helical pipes
Power consumption in agitated vessels
Psychrometry
✅ The correct answer is option B.
676. Fluid resistance to shear depends upon its
Rate of transfer of molecular momentum
Cohesion
Both A and B
Neither A nor B
✅ The correct answer is option C.
677. Which is the most efficient and best for measuring very small flow rate of gases?
Venturimeter
Orifice meter
Rotameter
Flow nozzle
✅ The correct answer is option C.
678. Vena-contracta pressure tapping is at a distance __________ from the position of an orificemeter fitted in a pipe of internal diameter ‘d’
D
0.5d
2d
4d
✅ The correct answer is option B.
679. The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop fo __________ fluid.
Dilatant
Pseudoplastic
Bingham plastic
Newtonion
✅ The correct answer is option A.
680. Nature of fluid flow during the opening of a valve in a pipeline is
Laminar
Unsteady
Steady
Uniform
✅ The correct answer is option B.