0.1
0.55
0.95
1.85
✅ The correct answer is option C.
Fluid Mechanics MCQs
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.
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.
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.
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.
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.
Nature of fluid flow during the opening of a valve in a pipeline is
Laminar
Unsteady
Steady
Uniform
✅ The correct answer is option B.
In the low Reynolds number region, the drag force on a sphere is proportional to
V
V2
V4
V0.5
✅ The correct answer is option A.
Capillary tube method of viscosity measurement is based on the
Hagen-Poiseulle’s equation
Stoke’s law
Navier-stokes equation
None of these
✅ The correct answer is option A.
The ratio of wall drag to total drag in the Stoke’s law range is
0.5
1
1-Mar
2-Mar
✅ The correct answer is option D.