Back Flow Test Questions and Answers Graded A+

Back Flow Test Questions and Answers
Graded A+
The unintentional reversal of flow in a potable water system which may result in contamination

or pollution of the system.

A. cross connection

B. backflow

C. backpressure backgflow


D. backsiphonage backflow ✔✔B. Backflow




A device installed in the potable water supply to a system that contains a pullutant or

contaminant to prevent backflow into the potable water system within the facility

A. backflow

B. backflow prevention device

C. backflow pressure backflow


D. isolation backflow device ✔✔D. isolation backflow device




A connection made to the potable water system whereby the risk from backflow occuring would

be limited to the pollution of the potable water with objectionable but nontoxic substances.

,A. health hazard (low)

B. health hazard (High)

C. pollution


D. contamination ✔✔A. Health Hazard (Low)




Any device, method, or construction used to prevent the backward flow of liquids, solids, or

gases into potable distribution system.

A. backflow prevention device

B. air gap

C. isolution backflow device


D. backsiphonage backflow ✔✔A. backflow prevention device




A mechanical device consisting of a float check valve and an air inlet port designed to prevent

backsiphonage

A. back flow

B. pollution

C. air gap


D. atmospheric vacuum breaker ✔✔D. atmospheric vacuum breaker

,The reversal of normal flow in a system caused by a negative pressure (vacuum or partial

vacuum) in the supply piping.

A. atmostpheric vacuum breaker

B. backflow

C. backsiphonage backflow


D. backpressure backflow ✔✔C. backsiphonage backflow




Does not constitute an actual health hazard although the quality of the water is impaired with

respect to taste, odor, or utility.

A. health hazard (high)

B. pulution

C. degree of hazard


D. toxic substance ✔✔B. pollution




Any liquid, solid, or gas, which when introduced into the water supply, creates, or may create, a

danger to the health and well being of the consumer.

A. contamination

B. Health hazard (high)

, C. health hazard (low)


D. toxic substance ✔✔D. toxic substance




A determination on whether the substance in the nonpotable system is toxic or nontoxic

A. degree of hazard

B. health hazard (high)

C. health hazard (low)


D. toxic substance ✔✔A. degree of hazard




The unobstructed vertical distance through the free atmosphere between the lowest opening from

any pipe or outlet supplying water to a tank, and plumbing fixture.

A. air gap

B. submerged inlet

C. backflow


D. cross connection ✔✔A. air gap




An arrangement of pipes, fittings, or devices that introduces potable water into a nonpotable

system below the flood level rim of a receptacle