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Fluid Mechanics for Chemical

Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the_______________?

Fluid Mechanics for Chemical /
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.

Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the_______________? Read More »

Fluid Mechanics for Chemical

Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ?

Fluid Mechanics for Chemical /
Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ?

A. D = 1840 H0.5/N
B. D = 1840 N/H0.5
C. H = 1840 D0.5/N
D. D = 1840 H/N

Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ? Read More »

Fluid Mechanics for Chemical

The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to _______________ in Stoke’s law regime?

Fluid Mechanics for Chemical /
The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to _______________ in Stoke’s law regime?

A. 1
B. 0.5
C. 2
D. 1.5

The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to _______________ in Stoke’s law regime? Read More »

Fluid Mechanics for Chemical

Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be _____________________ ft?

Fluid Mechanics for Chemical /
Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be _____________________ ft?

A. 40
B. 34
C. 8
D. 37

Maximum theoretical suction lift for water at 15°C by a centrifugal pump is 34 ft. The same for water at 90°C will be _____________________ ft? Read More »

Fluid Mechanics for Chemical

For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is___________________?

Fluid Mechanics for Chemical /
For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is___________________?

A. More
B. Less
C. Equal
D. Either A. or B.; depends on the viscosity of the fluid

For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is___________________? Read More »

Fluid Mechanics for Chemical