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Water Distribution Exam 2023 with complete solutions
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Water Distribution Exam 2023 with complete solutions
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Water Distribution Exam 2023 with complete solutionsA 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
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