What is meant by pump cavitation?

What is meant by pump cavitation?

• A. Bubbles in the fluid caused by excess suction
• B. Bubbles in the fluid caused by component rotation
• C. Cavities in the pump
• D. Cavities in the torque converter pump

Answer: (A)

Cavitation happens when the pump creates a region of very low pressure at the suction side, so the liquid’s pressure falls below its vapor pressure and tiny vapor bubbles form in the fluid. As the pump continues to operate, those bubbles travel to higher-pressure areas where they collapse violently, causing noise, vibration, and potential damage to impeller surfaces. This phenomenon is all about bubbles forming because suction is too strong (low suction pressure), not about rotation or any physical cavities inside the pump. That’s why the description “bubbles in the fluid caused by excess suction” is the correct way to express pump cavitation. The other options describe things that aren’t what cavitation is (bubbles from rotation, or cavities in the pump or torque converter pump).

Cavitation happens when the pump creates a region of very low pressure at the suction side, so the liquid’s pressure falls below its vapor pressure and tiny vapor bubbles form in the fluid. As the pump continues to operate, those bubbles travel to higher-pressure areas where they collapse violently, causing noise, vibration, and potential damage to impeller surfaces. This phenomenon is all about bubbles forming because suction is too strong (low suction pressure), not about rotation or any physical cavities inside the pump. That’s why the description “bubbles in the fluid caused by excess suction” is the correct way to express pump cavitation. The other options describe things that aren’t what cavitation is (bubbles from rotation, or cavities in the pump or torque converter pump).