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.Management Sciences
Category: Fluid Mechanics for Chemical
Vena-contracta formed during flow of a liquid through an orificemeter has__________________?
A. Minimum liquid cross-section
B. More diameter compared to orifice diameter
C. Minimum velocity of fluid stream
D. None of these
Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?
A. Temperature
B. Pressure
C. Both A. & B.
D. Neither A. nor B.
Which of the following denotes the effect of compressibility in fluid flow ?
A. Weber number
B. Mach number
C. Euler number
D. Reynolds number
Nature of fluid flow during the opening of a valve in a pipeline is_________________?
A. Laminar
B. Unsteady
C. Steady
D. Uniform
Bernoulli’s equation describes the _______________?
A. Mechanical energy balance in potential flow
B. Kinetic energy balance in laminar flow
C. Mechanical energy balance in turbulent flow
D. Mechanical energy balance in boundary layer
Which is not a variable head meter _________________?
A. Venturimeter
B. Pitot tube
C. Rotameter
D. None of these
For a particle settling in water at its terminal settling velocity, which of the following is true ?
A. Buoyancy = weight + drag
B. Weight = buoyancy + drag
C. Drag = buoyancy + weight
D. Drag = weight
One poise (unit of absolute/dynamic viscosity) is equivalent to one_____________________?
A. gm/cm2. sec
B. gm/cm. sec
C. cm2/sec
D. m2/sec
The specific speed of a pump is defined as the speed of a unit of such a size, that it__________________?
A. Delivers unit discharge at unit head
B. Requires unit power for unit head
C. Delivers unit discharge at unit power
D. None of these
Kinetic energy of fluid per unit weight represented by the velocity head is given by___________________?
A. 2v2/gc
B. v2/2gc
C. ρv2/gc
D. ρ.v2/2gc
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