If a centrifugal pump were continually operated with the discharge valve closed the __________.

Correct Answer: Option B — pump would eventually overheat

Operating a centrifugal pump against a closed discharge valve causes the fluid within the casing to churn. This kinetic energy is converted into heat, which cannot be dissipated because there is no flow. This rapid temperature rise can damage seals, bearings, and internal clearances, leading to pump failure.