The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the_________________?
Correct answer: C. Suction minus vapor pressure of the liquid at suction temperature
- A. Discharge
- B. Suction
- C. Suction minus vapor pressure of the liquid at suction temperature
- D. Discharge minus vapor pressure of the liquid at the discharge temperature
Explanation
NPSH available is the suction pressure head plus suction velocity head, measured relative to the liquid vapour-pressure head at suction temperature. This corresponds to the suction terms minus vapour pressure, option c.
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