What is a measure of a pump’s ability to move liquid through the system?

A. Head
B. Total head
C. Discharge static head
D. Suction static head


A. Incorrect. Head is the pressure of a liquid caused solely by the weight of the liquid.
B. Correct. Total head in a pumping system is a measure of a pump’s ability to move liquid through the system.
C. Incorrect. Discharge static head is the vertical distance between the centerline of a pump and the surface of the liquid on the discharge side of the pump.
D. Incorrect. Suction static head is the vertical distance between the centerline of a pump and the surface of the liquid on the suction side of the pump.

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Why should the heating element of a hot-surface igniter NOT be touched when installing a replacement igniter?

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