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.Management Sciences
Category: Fluid Mechanics for Chemical
What is the normal range of exit cone angle of a Venturimeter ?
A. 2 to 5
B. 7 to 15
C. 15 to 25
D. >25
The Stoke’s stream function applies to the________________?
A. Irrotational flow only
B. Ideal/non i viscous fluids only
C. Cases of axial symmetry
D. None of these
Boiler feed water pump is usually a ______________ pump?
A. Reciprocating
B. Gear
C. Multistage centrifugal
D. Diaphragm
Cd for the orifice plate varies from ___________________?
A. 0.58 to 0.8
B. 0.93 to 0.98
C. 0.2 to 0.3
D. 0.02 to 0.03
Which of the following exemplifies a three dimensional fluid flow ?
A. Fluid flow at the inlet to a nozzle
B. Fluid flow between parallel plates
C. Viscous fluid flow between converging plates
D. None of these
In case of turbulent flow of a Newtonian fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)?
A. Vavg
B. 1.2 Vavg
C. 1.5 Vavg
D. 1.8 Vavg
In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes_______________?
A. Less than atmospheric pressure
B. More than liquid vapor pressure
C. Less than liquid vapor pressure
D. More than atmospheric pressure
The boundary layer is that part of a moving fluid, in which the fluid velocity is_________________?
A. Affected by the fluid flow pressure
B. Constant
C. Affected by the presence of a solid boundary
D. All A., B. and C.
Pumping of a corrosive liquid is generally preferred to be done by a ______________ pump, as it can be made of a variety of materials including plastics?
A. Piston
B. Gear
C. Positive displacement
D. Sump
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