Grade II water operator Questions With Complete Solutions
% of copper in copper sulfate Correct Answers 39.81%
1 acre ft of water = ___________ gal Correct Answers 326000
gal
1 cu ft of water =_______lbs Correct Answers 62.4 lbs
1 cu ft per second =__________gpm Correct Answers 448.8
gpm
1 cu ft per second =________MGD Correct Answers .646
MGD
1 ft of water =________ psi Correct Answers .433 psi
1 ft= _______m Correct Answers .305 m
1 gal of water =__________ lbs Correct Answers 8.34 lbs
1 gallon= ________ L Correct Answers 3.785
1 horsepower equals ________ kW Correct Answers .746 kW
1 horsepower equals________ W Correct Answers 746watts
1 lb =_______ kg Correct Answers .454 kg
1 MGD =______cu ft per second Correct Answers 1.55 cu ft
per second
,1 psi =_________ ft of water Correct Answers 2.31 ft of water
1% is equal to_________mg/L Correct Answers 10000 mg/L
1cu ft of water =_________ gal Correct Answers 7.48 gal
1cu m of water =_________ gal Correct Answers 264 gal
2 major types of wastewater contamination Correct Answers
nutrient loading and microbial contamination
2 methods for algae control at source water Correct Answers
copper sulfate and PAC
3:1 ratio chlorine to ammonia will form Correct Answers
monochloramines
50mg/ml to 150mg/l of alkalinity, copper sulfate must be
Correct Answers increased as alkalinity increases
8.34lbs of a substance in a million gallons of water is equal to
Correct Answers 1mg/L
a chemical algae control program should be monitored when
Correct Answers before during and after chemical applications
a major source of wastewater contamination Correct Answers
septic tank leaching systems
a well is acidified in order to Correct Answers increase yield
, adding sodium hypochlorite to water will Correct Answers
increase pH
additives in detergents that tie up hardness ions Correct Answers
sequestering agents
advantage of hypolimnetic oxygenation Correct Answers
oxygenates the sediment/water interface in the lake
advantage of single inlet intake structures Correct Answers
simple and less costly for O&M
aeration to remove Fe and Mn also removes Correct Answers
CO2 /which enhances oxidation by raising pH
algae blooms are also called Correct Answers phytoplankton
algal bloom can raise the pH of water Correct Answers from
around 7 to 9 or higher
algal bloom cause pH to do what during the day and night
Correct Answers increase pH during the day and decrease
during the night
algal bloom cause T&O problems and short filter runs but what
else can they cause Correct Answers increased pH/organic
loading/DO depletion
allows entrance of chlorine gas to chlorinator from the chlorine
container Correct Answers gas inlet
% of copper in copper sulfate Correct Answers 39.81%
1 acre ft of water = ___________ gal Correct Answers 326000
gal
1 cu ft of water =_______lbs Correct Answers 62.4 lbs
1 cu ft per second =__________gpm Correct Answers 448.8
gpm
1 cu ft per second =________MGD Correct Answers .646
MGD
1 ft of water =________ psi Correct Answers .433 psi
1 ft= _______m Correct Answers .305 m
1 gal of water =__________ lbs Correct Answers 8.34 lbs
1 gallon= ________ L Correct Answers 3.785
1 horsepower equals ________ kW Correct Answers .746 kW
1 horsepower equals________ W Correct Answers 746watts
1 lb =_______ kg Correct Answers .454 kg
1 MGD =______cu ft per second Correct Answers 1.55 cu ft
per second
,1 psi =_________ ft of water Correct Answers 2.31 ft of water
1% is equal to_________mg/L Correct Answers 10000 mg/L
1cu ft of water =_________ gal Correct Answers 7.48 gal
1cu m of water =_________ gal Correct Answers 264 gal
2 major types of wastewater contamination Correct Answers
nutrient loading and microbial contamination
2 methods for algae control at source water Correct Answers
copper sulfate and PAC
3:1 ratio chlorine to ammonia will form Correct Answers
monochloramines
50mg/ml to 150mg/l of alkalinity, copper sulfate must be
Correct Answers increased as alkalinity increases
8.34lbs of a substance in a million gallons of water is equal to
Correct Answers 1mg/L
a chemical algae control program should be monitored when
Correct Answers before during and after chemical applications
a major source of wastewater contamination Correct Answers
septic tank leaching systems
a well is acidified in order to Correct Answers increase yield
, adding sodium hypochlorite to water will Correct Answers
increase pH
additives in detergents that tie up hardness ions Correct Answers
sequestering agents
advantage of hypolimnetic oxygenation Correct Answers
oxygenates the sediment/water interface in the lake
advantage of single inlet intake structures Correct Answers
simple and less costly for O&M
aeration to remove Fe and Mn also removes Correct Answers
CO2 /which enhances oxidation by raising pH
algae blooms are also called Correct Answers phytoplankton
algal bloom can raise the pH of water Correct Answers from
around 7 to 9 or higher
algal bloom cause pH to do what during the day and night
Correct Answers increase pH during the day and decrease
during the night
algal bloom cause T&O problems and short filter runs but what
else can they cause Correct Answers increased pH/organic
loading/DO depletion
allows entrance of chlorine gas to chlorinator from the chlorine
container Correct Answers gas inlet
