Centrifugal pump discharge vs. speed at constant head and geometry Assume impeller diameter and system head remain the same. Describe how discharge varies with rotational speed. Choose the correct relation.

Difficulty: Easy

• Discharge is directly proportional to speed (Q ∝ N)
• Discharge varies as the square of speed (Q ∝ N²)
• Discharge is independent of speed
• Discharge decreases as speed increases