Which outcome occurs when a centrifugal pump cavitates due to insufficient Net Positive Suction Head Available (NPSHa) within a refrigeration chiller system?

💡 Explanation

Reduced cooling capacity results because vaporization of the refrigerant caused by cavitation obstructs the impeller's ability to effectively pump liquid. Therefore, the heat transfer is therefore limited, rather than experiencing increased torque or stable operation normally exhibited under correct NPSHa.

• Which outcome accelerates oxidation in a prestressed concrete beam when chloride penetration compromises the passivating layer?
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• Which mechanism reduces the effective yield strength of steel rebar during welding?
• Which mechanism causes instability during high-speed robotic welding?
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