Head developed by a centrifugal pump depends on
A. Impeller diameter
B. Speed
C. Fluid density
D. Both (A) and (B) above
Answer: Option D
Solution (By Examveda Team)
Impeller Diameter (A): A larger impeller diameter means the fluid travels a greater distance while being pushed outwards. This results in a higher velocity of the fluid leaving the impeller and consequently, a higher head (pressure) developed.Speed (B): The faster the impeller rotates (higher speed), the more kinetic energy is imparted to the fluid. This increased kinetic energy translates into a higher velocity and a greater head being developed by the pump.
Fluid Density (C): While fluid density does affect the power required to pump the fluid, it does not directly influence the head developed by a centrifugal pump for a given impeller diameter and speed. The head is primarily determined by the velocity imparted to the fluid.
Therefore, the head developed by a centrifugal pump is directly related to both the impeller diameter and the speed of rotation.
This Question Belongs to Mechanical Engineering >> Hydraulics And Fluid Mechanics In ME
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