Water Distribution Exam Questions and
Answers rated 100% Correct
A noisy or vibrating valve may be an indication of what? - ANSWER-Cavitation
The selective destruction or inactivation of pathogenic organisms is - ANSWER-
Disinfection
Pathogenic organisms can be removed from water, killed, or inactivated by -
ANSWER-Filtration
The most commonly used distribution system disinfection is - ANSWER-Free
chlorine
A greenish- yellow gas with a penetrating and distinctive odor, two and a half times
heavier than air is - ANSWER-Chlorine
A brief session to discuss aspects of a job and safety - ANSWER-Tailgate safety
meeting
The most common means of disinfecting drinking water used today to protect the
public's health? - ANSWER-Chlorination
What is the responsibility of water distribution system operators? - ANSWER-Ensure
safe and pleasant drinking water is delivered to everyone's tap
A valve that automatically shuts off the flow into an elevated tank when the water
level in the tank reaches a predetermined level. - ANSWER-Altitude valve
A pump consisting of an impeller fixed on a rotating shaft, that is enclosed in a
casing, and having an inlet and a discharge connection would be called - ANSWER-
Centrifugal pump
What is the MAIN purpose of a water storage facility? - ANSWER-To provide
sufficient supply of water to average daily demands on the water supply system
When is the best time to take a storage tank out of service? - ANSWER-When
consumption is lowest
Gauges are commonly used on which side of a pump? - ANSWER-Discharge side
A condition which atmospheric or dissolved molecular oxygen is present in the
aquatic environment is called - ANSWER-Aerobic
Answers rated 100% Correct
A noisy or vibrating valve may be an indication of what? - ANSWER-Cavitation
The selective destruction or inactivation of pathogenic organisms is - ANSWER-
Disinfection
Pathogenic organisms can be removed from water, killed, or inactivated by -
ANSWER-Filtration
The most commonly used distribution system disinfection is - ANSWER-Free
chlorine
A greenish- yellow gas with a penetrating and distinctive odor, two and a half times
heavier than air is - ANSWER-Chlorine
A brief session to discuss aspects of a job and safety - ANSWER-Tailgate safety
meeting
The most common means of disinfecting drinking water used today to protect the
public's health? - ANSWER-Chlorination
What is the responsibility of water distribution system operators? - ANSWER-Ensure
safe and pleasant drinking water is delivered to everyone's tap
A valve that automatically shuts off the flow into an elevated tank when the water
level in the tank reaches a predetermined level. - ANSWER-Altitude valve
A pump consisting of an impeller fixed on a rotating shaft, that is enclosed in a
casing, and having an inlet and a discharge connection would be called - ANSWER-
Centrifugal pump
What is the MAIN purpose of a water storage facility? - ANSWER-To provide
sufficient supply of water to average daily demands on the water supply system
When is the best time to take a storage tank out of service? - ANSWER-When
consumption is lowest
Gauges are commonly used on which side of a pump? - ANSWER-Discharge side
A condition which atmospheric or dissolved molecular oxygen is present in the
aquatic environment is called - ANSWER-Aerobic
