What problem can occur when there is improper lubrication?
A. Leakage
B. Cavitation
C. Overheating
D. Overpressurization
A. Incorrect. Leaks most frequently occur where the pump shaft exits the pump casing.
B. Incorrect. Cavitation occurs when the pressure on the eye of a pump impeller falls below the vapor pressure of the liquid being pumped.
C. Correct. Pump overheating is often caused by improper lubrication.
D. Incorrect. Pump overpressurization can occur if the valves beyond the pump are incorrectly closed or blocked.
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