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Fluid Mechanics for Chemical

Cavitation occurs in a centrifugal pump when the suction pressure is________________?

Cavitation occurs in a centrifugal pump when the suction pressure is________________?

A. Less than the vapour pressure of the liquid at that temperature
B. Greater than the vapour pressure of the liquid at that temperature
C. Equal to the vapour pressure
D. Equal to the developed head

Cavitation occurs in a centrifugal pump when the suction pressure is________________? Read More »

Fluid Mechanics for Chemical

Erosion and pits formation on the impeller of a centrifugal pump may be due to________________?

Erosion and pits formation on the impeller of a centrifugal pump may be due to________________?

A. Cavitation
B. Low speed of impeller
C. Its operation with delivery valve closed for considerable time after starting the pump
D. Off centering of pump with motor

Erosion and pits formation on the impeller of a centrifugal pump may be due to________________? Read More »

Fluid Mechanics for Chemical

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?

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

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ? Read More »

Fluid Mechanics for Chemical

In case of turbulent flow of a Newtonian fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)?

In case of turbulent flow of a Newtonian fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)?

A. Vavg
B. 1.2 Vavg
C. 1.5 Vavg
D. 1.8 Vavg

In case of turbulent flow of a Newtonian fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)? Read More »

Fluid Mechanics for Chemical