A motor-driven centrifugal pump is operating in an open system with its discharge valve throttled to 50 percent.
How will the pump be affected if the discharge valve is fully opened?
A. Motor current decreases and total developed head decreases.
B. Available net positive suction head (NPSH) decreases, and pump differential pressure decreases.
C. Total developed head increases and available NPSH decreases.
D. The potential for pump cavitation decreases, and pump differential pressure decreases.
Show Answer
Answer: B
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