Specific speed for a centrifugal pump is___________________?
Specific speed for a centrifugal pump is___________________?
A. N √Q/H3/4
B. N √Q/H2/3
C. N3D5/H1/3
D. N √Q/H
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Slugging occurs in a fluidised bed, if the bed is___________________?
Slugging occurs in a fluidised bed, if the bed is___________________?A. Narrow
B. Deep
C. Both A. & B.
D. Neither A. nor B.A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by________________?
A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by________________?A. Decreasing the size of the inlet pipe
B. Increasing the size of the inlet pipe
C. Lowering the pump position
D. Both B. and C.The ______________ pressure is measured by a static tube?
The ______________ pressure is measured by a static tube?A. Dynamic
B. Static
C. Total
D. None of theseCheck valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the_______________?
Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the_______________?A. Back flow of fluid in the event of stoppage of pump
B. Discharge pressure
C. Flow of liquid during operation of the pump
D. All A., B. and C.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_______________?
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 voidageVane anemometer __________________?
Vane anemometer __________________?A. Is an area meter
B. Is a variable head meter
C. Rotates an element at a speed determined by the velocity of the fluid in which the meter is
immersed
D. None of these