Register

Water Distribution Manager (WDM) Greenbook 2 Practice Exam

Access More Questions
If no head exists on the suction side and no foot valve is provided, priming is accomplished by a
Correct Answer:
Vacuum pump or ejector
Explanation:
Priming a pump means removing air from the suction side so the pump can be filled with water and develop flow. When there’s no head on the suction side and no foot valve to hold a water column, gravity alone won’t keep the line primed. You need a source of suction to lift water from the source into the pump. A vacuum pump or ejector creates that suction by lowering the pressure at the pump entrance, drawing water up from the source and filling the suction line and pump casing, which achieves priming. An electric motor is just a drive, not a priming method. Gas pressure wouldn’t reliably create the necessary suction to lift water, and while a hand pump could be used for priming in some setups, the standard device for this scenario is a vacuum pump or ejector.

Access more questions from this quiz

Continue to Water Distribution Manager (WDM) Greenbook 2 Practice Exam for more practice questions and the full quiz experience.

Access More Questions