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Water distribution 2 Questions and Answers 100% Accurate
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Water distribution 2
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Water distribution 2Plastic - answer Most resistant to corrosion
Chlorine gas - answer heavier than air, extremely toxic, very corrosive to damp
atmospheres
Centrifugal pump - answer Most common pump, used for high flow, and low pressure
applications booster pumps
Positive displacement pump - answer For low flow, high pressure applications.
Chemical feed pumps are this type
Drawdown - answer The difference in water levels from the point where the pump starts
and stops.
DC current - answer Electric current used for cathodic protection.
Suction head - answer Vertical distance from the surface of water supply to the
centerline of the pump
Pathogenic bacteria - answer Salmonella, shigella, bacillus, typhoid fever, cholera
Physical disinfection - answer Ultraviolet rays, heat, and ultrasonic waves
Chemical disinfection - answer Iodine, bromine, bases, ozone, and chlorine
Chlorine - answer Greenish yellow gas, that is two and a half times heavier than air
Chloramines - answer When chlorine reacts to ammonia it's called
Break point chlorination - answer The point at which a measurable amount of free
chlorine residual is achieved
Free available chlorine - answer The available residual that has not combined with
ammonia
Gate valves - answer Used in high pressure applications. Designed to open and close
straight line flow but not to regulate flow.
Globe valves - answer Used to regulate flow or pressure, kitchen, or bathroom valves
Plug valves - answer Valves that we use as corporation stops, and meter stops
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