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Water DISTRIBUTION Questions with
Answers (100% Correct Answers)
If you come upon a co-worker who is not breathing, you should immediately
Answer: Start artificial respiration
A connection from the municipal water supply directly to the packing gland of
a centrifugal wastewater pump Answer: is a hazard to the safety of the potable
water supply
A waterborne disease that can be transferred to humans if proper disinfection is
not provided is Answer: Typhoid
Rising stem valves are most often used Answer: in a pumping station
The device used to check water flow to consumers is a Answer: Water meter
Which one of the following types of meters has NO MOVING parts Answer:
Venturi
Distribution system pressure should not be allowed to drop below ___ PSI
Answer: 20
To determine whether an intersecting sewer line crosses over or under a water
main, one would look at the Answer: Elevation view
The chlorine residual in water may be determined using the reagent Answer:
Diethyl-p-phenylendiamine (DPD)
Customer services are most commonly metered with ___ meters Answer:
Positive displacement
A toxic substance is always Answer: poisonous
The primary reason for a dry barrel fire hydrant is to Answer: keep the hydrant
from freezing
, 2
The rotating element in a centrifugal pump is commonly called Answer: an
impeller
First aid for 1st degree burn Answer: submerge the burned area in cold water
what info has to be on a lock out tag in use? Answer: signature of the person
who locked it out
killing of pathogenic organisms is called Answer: disinfection
Temporary cloudiness in freshly drawn samples of tap water may be caused by
Answer: air
Vent openings on reservoirs and storage tanks should be Answer: screened
Fire fighting may cause low pressure in an area of a distribution system. The
low pressure might lead to Answer: contamination of the system by back-
siphonage
Hydrogen Sulfide (H2S) smells like Answer: rotten eggs
When driving a company vehicle Answer: follow the same traffic laws as
everyone else
When using chlorine tablets to disinfect pipelines, its best to place the tablets
Answer: on the inside top
a connection between a safe and an unsafe water supply is called a Answer:
cross connection
velocity of flow in mains is usually expressed in terms of Answer: feet per
second (FPS)
When opening and closing valves in high pressure lines, the valves should be
opened and closed ___ Answer: Slowely
Pressure is usually measured in Answer: pounds per square inch (PSI)
a water main should be disinfected Answer: After the pipe is laid in place.
Water DISTRIBUTION Questions with
Answers (100% Correct Answers)
If you come upon a co-worker who is not breathing, you should immediately
Answer: Start artificial respiration
A connection from the municipal water supply directly to the packing gland of
a centrifugal wastewater pump Answer: is a hazard to the safety of the potable
water supply
A waterborne disease that can be transferred to humans if proper disinfection is
not provided is Answer: Typhoid
Rising stem valves are most often used Answer: in a pumping station
The device used to check water flow to consumers is a Answer: Water meter
Which one of the following types of meters has NO MOVING parts Answer:
Venturi
Distribution system pressure should not be allowed to drop below ___ PSI
Answer: 20
To determine whether an intersecting sewer line crosses over or under a water
main, one would look at the Answer: Elevation view
The chlorine residual in water may be determined using the reagent Answer:
Diethyl-p-phenylendiamine (DPD)
Customer services are most commonly metered with ___ meters Answer:
Positive displacement
A toxic substance is always Answer: poisonous
The primary reason for a dry barrel fire hydrant is to Answer: keep the hydrant
from freezing
, 2
The rotating element in a centrifugal pump is commonly called Answer: an
impeller
First aid for 1st degree burn Answer: submerge the burned area in cold water
what info has to be on a lock out tag in use? Answer: signature of the person
who locked it out
killing of pathogenic organisms is called Answer: disinfection
Temporary cloudiness in freshly drawn samples of tap water may be caused by
Answer: air
Vent openings on reservoirs and storage tanks should be Answer: screened
Fire fighting may cause low pressure in an area of a distribution system. The
low pressure might lead to Answer: contamination of the system by back-
siphonage
Hydrogen Sulfide (H2S) smells like Answer: rotten eggs
When driving a company vehicle Answer: follow the same traffic laws as
everyone else
When using chlorine tablets to disinfect pipelines, its best to place the tablets
Answer: on the inside top
a connection between a safe and an unsafe water supply is called a Answer:
cross connection
velocity of flow in mains is usually expressed in terms of Answer: feet per
second (FPS)
When opening and closing valves in high pressure lines, the valves should be
opened and closed ___ Answer: Slowely
Pressure is usually measured in Answer: pounds per square inch (PSI)
a water main should be disinfected Answer: After the pipe is laid in place.
