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.Management Sciences
Category: Fluid Mechanics for Chemical
The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a____________________?
A. Weir
B. Pitot tube
C. Kennison nozzle
D. V-notch
The ratio of inertial forces to viscous forces is called the ______________ number?
A. Weber
B. Mach
C. Froude
D. Reynold
Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the _______________ decreases?
A. NPSH required
B. BHP required by the pump
C. Head of the liquid pumped
D. All A., B. and C.
Manometers measure the ______________ pressure?
A. Vacuum as well as the atmospheric
B. Difference in
C. Absolute
D. Gage
Which of the following quantities are computed by using the hydraulic radius for noncircular ducts ?
A. Velocity and relative roughness
B. Head loss and velocity
C. Reynold number, relative roughness and head loss
D. Reynolds number and friction factor
Reciprocating pumps compared to centrifugal pumps__________________?
A. Deliver liquid at uniform pressure
B. Can handle slurries more efficiently
C. Are not subject to air binding
D. Can be operated with delivery valve closed
Two dimensional stream function________________?
A. Relates velocity and pressure
B. Is constant along a stream line
C. Is constant along an equipotential surface
D. None of these
Nominal size of a pipe is an indication of its ______________ diameter?
A. Inner
B. Outer
C. Approximate
D. None of these
Velocity at a certain point in case of streamline flow is_________________?
A. Constant
B. Independent of time
C. Both A. & B.
D. Neither A. nor B.
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