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In a centrifugal pump the inlet angle will be designed to have
- a)relative velocity vector in the radial direction
- b)absolute velocity in the radial direction
- c)velocity of flow to be zero
- d)peripheral velocity to be zero
Correct answer is option 'B'. Can you explain this answer?
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In a centrifugal pump the inlet angle will be designed to havea)relati...
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In a centrifugal pump the inlet angle will be designed to havea)relati...
Explanation:
A centrifugal pump is a type of dynamic pump in which a high-speed impeller rotates within a casing, creating a flow of fluid. Inlet angle refers to the angle at which the fluid enters the impeller. The correct answer is option B, i.e., the inlet angle will be designed to have an absolute velocity in the radial direction. This is because:
- Absolute velocity is the velocity of the fluid with respect to a fixed reference frame. In contrast, relative velocity is the velocity of the fluid with respect to the moving impeller. In a centrifugal pump, the absolute velocity of the fluid should be in the radial direction to ensure efficient pumping.
- This is because the impeller blades are designed to impart a tangential velocity to the fluid, which is then converted into a radial velocity due to the centrifugal force. Therefore, the fluid should enter the impeller with a radial velocity component to begin with, so that it can be efficiently converted into a higher radial velocity by the impeller blades.
- The inlet angle is also designed to minimize the losses due to flow separation and turbulence. If the inlet angle is too steep, the fluid may separate from the blade surface, leading to recirculation and turbulence. On the other hand, if the inlet angle is too shallow, the fluid may not enter the impeller smoothly and may cause cavitation.
- Therefore, the inlet angle is optimized based on the fluid properties, operating conditions, and impeller geometry, to ensure that the fluid enters the impeller with a smooth, radial velocity component.
Conclusion:
In summary, the inlet angle in a centrifugal pump is designed to have an absolute velocity in the radial direction, to ensure efficient pumping and minimize losses due to flow separation and turbulence.
A centrifugal pump is a type of dynamic pump in which a high-speed impeller rotates within a casing, creating a flow of fluid. Inlet angle refers to the angle at which the fluid enters the impeller. The correct answer is option B, i.e., the inlet angle will be designed to have an absolute velocity in the radial direction. This is because:
- Absolute velocity is the velocity of the fluid with respect to a fixed reference frame. In contrast, relative velocity is the velocity of the fluid with respect to the moving impeller. In a centrifugal pump, the absolute velocity of the fluid should be in the radial direction to ensure efficient pumping.
- This is because the impeller blades are designed to impart a tangential velocity to the fluid, which is then converted into a radial velocity due to the centrifugal force. Therefore, the fluid should enter the impeller with a radial velocity component to begin with, so that it can be efficiently converted into a higher radial velocity by the impeller blades.
- The inlet angle is also designed to minimize the losses due to flow separation and turbulence. If the inlet angle is too steep, the fluid may separate from the blade surface, leading to recirculation and turbulence. On the other hand, if the inlet angle is too shallow, the fluid may not enter the impeller smoothly and may cause cavitation.
- Therefore, the inlet angle is optimized based on the fluid properties, operating conditions, and impeller geometry, to ensure that the fluid enters the impeller with a smooth, radial velocity component.
Conclusion:
In summary, the inlet angle in a centrifugal pump is designed to have an absolute velocity in the radial direction, to ensure efficient pumping and minimize losses due to flow separation and turbulence.
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In a centrifugal pump the inlet angle will be designed to havea)relative velocity vector in the radial directionb)absolute velocity in the radial directionc)velocity of flow to be zerod)peripheral velocity to be zeroCorrect answer is option 'B'. Can you explain this answer?
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