What is a typical effect of cavitation in a hydraulic pump?

What is a typical effect of cavitation in a hydraulic pump?

• A. Increases signal accuracy.
• B. Reduces wear.
• C. Causes vapor bubbles to collapse, producing pressure pulsations and damage.
• D. Purges contaminants.

Answer: (C)

Cavitation happens when the pressure in the hydraulic pump drops below the liquid’s vapor pressure, forming vapor bubbles. When these bubbles move into higher-pressure regions, they violently collapse, sending shock-like pressure pulses through the pump. Those pulses beat against surfaces like the impeller and housing, causing erosion, pitting, vibration, and excessive noise, which can degrade efficiency and shorten the pump’s life. This explains why the typical effect is pressure pulsations and damage. The other options don’t fit because cavitation doesn’t improve signal accuracy, it doesn’t reduce wear, and it doesn’t purge contaminants.

Cavitation happens when the pressure in the hydraulic pump drops below the liquid’s vapor pressure, forming vapor bubbles. When these bubbles move into higher-pressure regions, they violently collapse, sending shock-like pressure pulses through the pump. Those pulses beat against surfaces like the impeller and housing, causing erosion, pitting, vibration, and excessive noise, which can degrade efficiency and shorten the pump’s life.

This explains why the typical effect is pressure pulsations and damage. The other options don’t fit because cavitation doesn’t improve signal accuracy, it doesn’t reduce wear, and it doesn’t purge contaminants.