Viscous
Laminar
Turbulent
Transition
✅ The correct answer is option C.
Chemical Engineering MCQs
__________ forces do not act in case of fluid flow.
Elastic
Tensile
Vibratory
Centrifugal
✅ The correct answer is option B.
Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)
D
1/d
Σ
L/σ
✅ The correct answer is option C.
Mass velocity is independent of temperature & pressure, when the flow is
Unsteady through unchanged cross-section
Steady through changing cross-section
Steady and the cross-section is unchanged
Unsteady and the cross-section is changed
✅ The correct answer is option C.
Hydraulic mean depth (Dm) for a circular pipe of diameter ‘D’ flowing full is 0.25 D. For a circular channel, at Dm = 0.3 D, gives the condition for the maximum
Flow rate
Mean velocity
Both A & B
Neither A nor B
✅ The correct answer is option B.
The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10⁻⁶m²/s).
24000
24
0.24
0.44
✅ The correct answer is option D.
N²Re/NFr is called the __________ number.
Brinkman
Galileo
Archimedes
Euler
✅ The correct answer is option B.
The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe.
Hyperbola
Parabola
Semi-circle
Semi-ellipse
✅ The correct answer is option B.
Creeping flow around a sphere is defined, when particle Reynolds number is
< 2100
< 0.1
> 2.5
< 500
✅ The correct answer is option B.
The vent valve provided in a liquid handling centrifugal pump is
Generally a needle valve
Used to release any gases that might be vapour locking the pump
Helpful in easy removal of samples
All of the above
✅ The correct answer is option D.