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- First Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q511 - General Subjects I
229. The hydraulic pump which would be mounted on the unit shown in the illustration, may begin to cavitate if __________
A clogged air breather (C) restricts airflow, creating a vacuum at the pump suction and causing cavitation. Cavitation occurs when inlet pressure drops below the fluid's vapor pressure, leading to bubble formation and pump damage. Options B, C, and D do not directly restrict pump inlet flow and therefore are not primary causes of cavitation; removing the suction strainer (H) would actually decrease the likelihood of cavitation.
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