In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes_______________?

Byadmin March 9, 2019August 26, 2021

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

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) ?

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

Read More 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

I.D. of 1/4″ schedule 40 pipe is 0.364″. I.D. of a 1/2″ schedule 40 pipe would be ______________ inch?

I.D. of 1/4″ schedule 40 pipe is 0.364″. I.D. of a 1/2″ schedule 40 pipe would be ______________ inch?

A. 4.728
B. 0.5
C. 0.622
D. 0.474

Read More I.D. of 1/4″ schedule 40 pipe is 0.364″. I.D. of a 1/2″ schedule 40 pipe would be ______________ inch?
Fluid Mechanics for Chemical

Which of the following can be used to create a flow of gas, where no significant compression is required ?

Which of the following can be used to create a flow of gas, where no significant compression is required ?

A. Reciprocating compressor
B. Blower
C. Axial flow compressor
D. Centrifugal compressor

Read More Which of the following can be used to create a flow of gas, where no significant compression is required ?
Fluid Mechanics for Chemical

______________ pumps are axial flow pumps?

______________ pumps are axial flow pumps?

A. Turbine
B. Propeller
C. Diffuser
D. None of these

Read More ______________ pumps are axial flow pumps?
Fluid Mechanics for Chemical

If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). ?

If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). ?

A. Q = Q1 + Q2 + Q3
B. V1 = V2 = V3
C. Q1 = Q2 = Q3
D. f = f1 + f2 + f3

Read More If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). ?
Fluid Mechanics for Chemical

Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?

Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?

A. I, II, III
B. II, III, V
C. I, II, V
D. II, IV, V

Read More Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?

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