air gap - ️️an open vertical drop, or vertical empty space that separates a drinking
water supply; prevents the contamination of drinking water by back siphonage or
backflow
ampere - ️️the current produced by an electromotive force of one volt acting
through a resistance of one ohm
sur...
OIT- EXAM PREP
air gap - ✔️✔️an open vertical drop, or vertical empty space that separates a drinking
water supply; prevents the contamination of drinking water by back siphonage or
backflow
ampere - ✔️✔️the current produced by an electromotive force of one volt acting
through a resistance of one ohm
surge chamber - ✔️✔️allows water to flow into or out of the pipe and minimizes any
sudden pos. or neg. pressure waves or surges in the pipe
colloids - ✔️✔️very small, finely divided solids that remain dispersed in a liquid for a
long time due to their small size and electrical charge
adsorption - ✔️✔️the gathering of a gas, liquid or dissolved substance on the surface
or interface zone of another material
alternating current - ✔️✔️an electric current that reverses its direction at regular
intervals
amperage - ✔️✔️the strength of an electric current measured in amperes
annular space - ✔️✔️a ring-shaped space located between two circular objects such
as two pipes or the space between the casing and the well wall
anode - ✔️✔️the positive pole or electrode of an electrolytic system
aquifer - ✔️✔️a natural underground layer of porous water-bearing materials
backflow - ✔️✔️a reverse flow condition
backsiphonage - ✔️✔️a form of backflow caused by a negative or below atmospheric
pressure within a water system
cavitation - ✔️✔️the formation and collapse of a gas pocket or bubble on the blade of
an impeller or the gate of a valve which drives water into the valve with a terrific force
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