Water Distribution D2 California
Practice test Questions with 100%
Correct Solutions
The water table is defined as the - ANSWER upper surface of the groundwater.
The shaft speed of an electric motor is most commonly expressed in units of - ANSWER
revolutions per minute
A coupon test installation in a distribution system is used to - ANSWER determine
the rate scaling or corrosion.
Disease causing bacteria are know as - ANSWER pathogenic
Normally, surface water and groundwater have a PH range of - ANSWER 6.8 to 8.5
Which is the best definition of turbidity in water? - ANSWER anything in water that
scatters light
A competent person must inspect excavations and adjacent areas for hazards -
ANSWER daily, prior to the start of work, and as needed throughout the shift.
The component of a centrifugal pump sometimes installed on the end of a suction
pipe to hold the priming is known as a - ANSWER foot valve
, The principal purpose of an altitude valve on an elevated tank is to - ANSWER control
maximum filling level in distribution storage.
The term primacy means the - ANSWER authority by the states to supersede the
USEPA drinking water regulations.
Reciprocating positive displacement pumps are also known as - ANSWER Piston pumps
Modertely hard water will have a hardness range of ----- mg/L as - ANSWER 61 to 120
A common method for removing hydrogen sulfide from water is - ANSWER aeration
The treatment process designed to kill pathogenic organisms is - ANSWER disinfection
Lead in drinking water can result in - ANSWER impaired mental functioning in children.
A disease that might be transferred to a new victim through water is - ANSWER typhoid
An average percentage range for unaccounted for water in a fully metered system is
- ANSWER 11 to 15%
A cross connection is defined as a connection between - ANSWER a potable water
system and nonpotable water system.
Backsiphonage is caused by - ANSWER partial vacuum in the line.
Five milligrams per litre equals ----- parts per million - ANSWER 5.0
Practice test Questions with 100%
Correct Solutions
The water table is defined as the - ANSWER upper surface of the groundwater.
The shaft speed of an electric motor is most commonly expressed in units of - ANSWER
revolutions per minute
A coupon test installation in a distribution system is used to - ANSWER determine
the rate scaling or corrosion.
Disease causing bacteria are know as - ANSWER pathogenic
Normally, surface water and groundwater have a PH range of - ANSWER 6.8 to 8.5
Which is the best definition of turbidity in water? - ANSWER anything in water that
scatters light
A competent person must inspect excavations and adjacent areas for hazards -
ANSWER daily, prior to the start of work, and as needed throughout the shift.
The component of a centrifugal pump sometimes installed on the end of a suction
pipe to hold the priming is known as a - ANSWER foot valve
, The principal purpose of an altitude valve on an elevated tank is to - ANSWER control
maximum filling level in distribution storage.
The term primacy means the - ANSWER authority by the states to supersede the
USEPA drinking water regulations.
Reciprocating positive displacement pumps are also known as - ANSWER Piston pumps
Modertely hard water will have a hardness range of ----- mg/L as - ANSWER 61 to 120
A common method for removing hydrogen sulfide from water is - ANSWER aeration
The treatment process designed to kill pathogenic organisms is - ANSWER disinfection
Lead in drinking water can result in - ANSWER impaired mental functioning in children.
A disease that might be transferred to a new victim through water is - ANSWER typhoid
An average percentage range for unaccounted for water in a fully metered system is
- ANSWER 11 to 15%
A cross connection is defined as a connection between - ANSWER a potable water
system and nonpotable water system.
Backsiphonage is caused by - ANSWER partial vacuum in the line.
Five milligrams per litre equals ----- parts per million - ANSWER 5.0
