In a centrifugal pump the liquid enters the pump from?

APPSC AEE (Civil/Mechanical) 2012

⭕ (a) at the centre

⭕ (b) at the top

⭕ (c) at the bottom

⭕ (d) from sides

Explanation: In a centrifugal pump, liquid enters the impeller at the center (eye of the impeller) and flows outward radially due to the centrifugal force.

This is the reverse operation of an inward radial flow turbine. The centrifugal pump operates on the forced vortex principle — the rotating impeller transfers kinetic energy to the fluid, increasing its pressure head as it moves outward.

Flow Direction in Centrifugal Pump

This question highlights a fundamental concept of centrifugal pump operation — where fluid enters and how energy conversion happens inside the impeller.

Key Points:

• Entry Point: Liquid enters at the center of impeller (eye)
• Flow Direction: Radially outward due to centrifugal force
• Energy Conversion: Mechanical energy to pressure head using forced vortex

Conclusion:

The correct answer is at the centre. Understanding this is crucial for exams like APPSC AEE, SSC-JE, GATE, and other technical assessments involving pump mechanics.

Also Read: Q-Which One Is Not a Centrifugal Pump?