Momentum transfer in laminar flow of fluids results due to the_________________?

A. Viscosity
B. Density
C. Velocity gradient
D. None of these

Related Mcqs:

The momentum correction factor for the velocity distribution of laminar flow is____________________?
A. 1.3 B. 1.66 C. 2.5 D. None of these...
What is the shear rate at the pipe wall, in case of laminar flow of Newtonian fluids in a pipe of diameter ‘D’ & length ‘L’ incurring a pressure drop ‘Δp’ with average velocity ‘Vavg’ ?
A. D Δp/8L B. D Δp/4L C. 8 Vavg/D D. 4 Vavg/D...
For laminar flow of Newtonian fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to (where, μ = fluid viscosity ) ?
A. μ B. 1/μ C. √μ D. 1/√μ...
The velocity profile exhibited by laminar flow of Newtonian 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?
A. Hyperbola B. Parabola C. Semi-circle D. Semi-ellipse...
Applying a pressure drop across a capillary results in a volumetric flow rate ‘Q’ under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is____________________?
A. Q/2 B. Q/4 C. Q/8 D. Q/16...
The frictional resistance in laminar flow does not depend on the_________________?
A. Area of surface in contact B. Flow velocity C. Fluid temperature D. Pressure of flow...
For laminar flow of a shear thinning liquid in a pipe, if the volumetric flow rate is doubled, the pressure gradient will increase by a factor of_________________?
A. 2 B. 2 D. 1/2...
In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as: (where, ‘δ’ is the boundary layer thickness and ‘x’ is the distance from the leading edge in the direction of flow)?
A. Re B. √Re C. 1/Re D. Re-1/2...
For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to____________________?
A. R B. R2 C. R4 D. R0.5...
Transition from laminar flow to turbulent flow is aided by the__________________?
A. Surface roughness and curvature (i.e. sharp corners) B. Vibration C. Pressure gradient and the compressibility of the flowing medium D. All A., B. & C....