WATER DISTRIBUTION GRADE IV - PRACTICE EXAM 3
TEST WITH LATEST UPDATED (QUESTIONS AND
ANSWERS) ALREADY PASSED!
A couple test in a distribution system is used to (chose best answer)
Correct Answers Determine scaling or corrosion rate
Normally, surface water & groundwater have a pH range of Correct
Answers 6.8 to 8.5
A "competent person" must insect excavation & adjacent areas for
hazards Correct Answers Daily, prior to the start or work, and as needed
throughout the shift
Moderately hard has a range of ___________ mg/L as calcium
carbonate Correct Answers 61 to 120
Common removal method for hydrogen sulfide from water Correct
Answers Aeration
Lead in drinking water can result in Correct Answers Impaired mental
functioning in children
Pump performance curve reflect Correct Answers Pump horsepower
According to the AWWA what flow rate could be expected fro a "Red"
fire hydrant? Correct Answers 0 GPM - 500 GPM
, A wharf hydrant nozzle is Correct Answers 2"
A noisy & vibrating gate valve indicates Correct Answers Cavitation
Difference between Tier 1 and Tier 2 violations is Correct Answers Tier
1 violations potentially impose direct & adverse health effects; Tier 2
don't
Devise used to measure distribution system flow Correct Answers Pitot
gauge
Chemical (s) in water supplies that can be harmful to a person's health
when present in excess of drinking water standards Correct Answers
Mercury
Pathogenic, water system, organisms causing disease outbreak Correct
Answers Giardia
Test kit used to determine chlorine residuals Correct Answers DPD
Which color of fine hydrant would you expect to provide the best flow?
Correct Answers Blue
The accuracy for large water meters is Correct Answers 100 ± 3%
TEST WITH LATEST UPDATED (QUESTIONS AND
ANSWERS) ALREADY PASSED!
A couple test in a distribution system is used to (chose best answer)
Correct Answers Determine scaling or corrosion rate
Normally, surface water & groundwater have a pH range of Correct
Answers 6.8 to 8.5
A "competent person" must insect excavation & adjacent areas for
hazards Correct Answers Daily, prior to the start or work, and as needed
throughout the shift
Moderately hard has a range of ___________ mg/L as calcium
carbonate Correct Answers 61 to 120
Common removal method for hydrogen sulfide from water Correct
Answers Aeration
Lead in drinking water can result in Correct Answers Impaired mental
functioning in children
Pump performance curve reflect Correct Answers Pump horsepower
According to the AWWA what flow rate could be expected fro a "Red"
fire hydrant? Correct Answers 0 GPM - 500 GPM
, A wharf hydrant nozzle is Correct Answers 2"
A noisy & vibrating gate valve indicates Correct Answers Cavitation
Difference between Tier 1 and Tier 2 violations is Correct Answers Tier
1 violations potentially impose direct & adverse health effects; Tier 2
don't
Devise used to measure distribution system flow Correct Answers Pitot
gauge
Chemical (s) in water supplies that can be harmful to a person's health
when present in excess of drinking water standards Correct Answers
Mercury
Pathogenic, water system, organisms causing disease outbreak Correct
Answers Giardia
Test kit used to determine chlorine residuals Correct Answers DPD
Which color of fine hydrant would you expect to provide the best flow?
Correct Answers Blue
The accuracy for large water meters is Correct Answers 100 ± 3%
