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.Management Sciences
Category: Fluid Mechanics for Chemical
The valve commonly used in pipes larger than 2″ dia is a______________?
0
A. Globe valve
B. Plug-cock
C. Gate valve
D. Check valve
Umf is the minimum fluidisation velocity for a bed of particles. An increase in the superficial gas velocity from 2 Umf to 2.5 Umf results in (all velocities are smaller than the entrainment velocity of the particles) no change in the_______________?
A. Drag on particles
B. Drag on column walls
C. Bed height
D. Bed voidage
High specific speed of a pump implies that, it is a/an _____________ pump?
A. Centrifugal
B. Mixed flow
C. Axial flow
D. None of these
If more than two branches of pipes are to be connected at the same point, then use a/an_________________?
A. Elbow
B. Union
C. Tee
D. None of these
Small pressure differences in liquids is measured using a/an__________________?
A. U-tube manometer
B. Inclined tube manometer
C. Pitot tube
D. None of these
For an incompressible fluid, the bulk modulus of elasticity is____________________?
A. 5 kg/m3
B. ∞ N/m2
C. 1 N
D. 0 N/m
Turbulent flow generally occurs for cases involving__________________?
A. Highly viscous fluid
B. Very narrow passages
C. Very slow motion
D. None of these
Fluid flow through a packed bed is represented by the ______________ equation?
A. Fanning’s
B. Ergun’s
C. Hagen-Poiseuille’s
D. None of these
The pressure head of a flow meter remains constant for_________________?
A. Venturimeter
B. Orificemeter
C. Rotameter
D. Pitot tube
Schedule number of a pipe, which is a measure of its wall thickness, is given by ________________?
A. 1000 P’/S
B. 100 P’/S
C. 1000 S/P’
D. 10000 P’/S
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