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.Management Sciences
Category: Fluid Mechanics for Chemical
The velocity distribution in direction normal to the direction of flow in plane Poiseuille flow is_______________________?
A. Hyperbolic
B. Parabolic
C. Linear
D. None of these
Which of the fluid forces are not considered in the Reynold’s equation of flow ?
A. Viscous forces
B. Turbulent forces
C. Pressure forces
D. Compressibility forces
Turbine impeller____________________?
A. Produces only radial current
B. Produces only tangential current
C. Is effective over wide range of viscosities
D. Does not produce tangential current
An isentropic process is the one, in which_________________?
A. pv = constant
B. pvr= constant
C. pvr = constant, and process is reversible
D. None of these
For water, when the pressure increases, the viscosity_________________?
A. Also increases
B. Decreases
C. Remain constant
D. First decreases, and then increases
For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is________________?
A. More
B. Less
C. Equal
D. Independent of porosity
Which of the following flow measuring devices is an area meter ?
A. Venturimeter
B. Orificemeter
C. Anemometer
D. Rotameter
With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Increases exponentially
Pick out the wrong statement?
A. The vacuum pressure is always the negative gauge pressure
B. The pressure of the liquid measured by a piezometer tube is the gauge pressure
C. Manometric liquid should have high surface tension
D. The point at which the resultant pressure on an immersed surface acts, is known as the centre
of gravity
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