Short Course Test
Transmits the power from one shaft to another shaft
Flexible coupling
Flexible head
Radial bearing
As water temp decreases the disinfecting action of chlorine
Decreases
Increases
Whats the strength of high quality calcium
5%
15%
65%
90%
84 degrees is what in celsius
29 degrees
53 degrees
85 degrees
95 degrees
To know the amount of chemicals needed a operator must know the proper
Cross sectional area of the tank
Length pf filter run
Rate of flow
Width of flocculation chamber
How many minutes will take to cut a 48" main
16
21 min
33 min
51 min
An upright c cylindrical tank with a flat bottom has a diameter of 12 feet. When filled to a depth of 8 feet, what is the tank volume?
226.2 cubic feet
904.3 cubic feet
3619 cubic feet
5000 cubic feet
During a flow test , 205 gallons of water flowed through the meter. The register on the meter indicated that 192 gallons of water flowed through the meter. What is the accuarcy of the meter?
37%
60%
64%
94%
Grab samples represent
Average daily conditions at the sample location
Average daily conditions
Conditions for 2 hours before and after the sample was taken
Conditions at the time the sample was taken
What term describes the reduction in pressure due to friction in pipes?
Head loss
Velocity
Capacity loss
Thrust loss
The amount of chlorine used by organic matter is called the
Chlorine demand
Chlorine residual
Free available chlorine
Total available chlorine
Why are samples refrigerated for storage ?
To reduce the coagulation of solids in the sample
To reduce the acid/alkalinity ratio in the sample
To reduce the biological activity in the sample
To reduce the ph of the sample
Which of the following may cause temporary cloudiness in a freshly drawn sample of tap water?
Air
Chlorine
Calcium
Silica
The term hydrant bury refers to the
Amount of cover over the hydrant branch or connecting pipe
Depth of the auxiliary valve
Depth to which the top of the hydrant base is buried
Vertical distance between the hydrant grade line and the bottom of the hydrant branch
Reports are valuable for determining the policies and the plans of an organization chiefly because they
Better communications with the public
Help reveal existing trends and predict future problems in the distribution system
Acquaint the employees with decisions as soon as they are made
Take the place of any individual communications
The chain of custody of a sample is legally important because it proved that
One person had possession of the sample at all times
Responsible people had possession of the samples at all times
The sample was locked up at all times
The sample was properly analyzed
What is the recommended minimum chlorine residual that should be measured in the flow at the end of the line when using the continuous feed method for disinfecting water mains
25 mg/L
75 mg/L
100 mg/L
150 mg/L
Who is responsible for building an effective saftey program?
Elected officials
Regulators
Management
Consulting engineers
A sample with a pH of 7.0 is
Acidic
Alkaline
Neutral
Basic
The major purpose of an inventory of actual physical units is to
Catch employees who have taken materials
Check for significant differences in inventory
Comply with irs and government finance department requirements
Retire obsolete materials
A hydro-pneumatic (pressure)tank used for storage on a small water supply has an effective capacity of 6000 gallons of water. The average water demand of the supply is 300 gallons. During a power outage , if the demand does not change , the 6000 gallons of water in the tank
10 minutes
20 minutes
200 minutes
300 minutes
A ground storage tank is 50 feet in diameter and 30 feet high. The tank is being filled at 2 feet per hour. What is the flow into the tank?
10 gpm
489 gpm
546 gpm
1762 gpm
Chlorine in dry form is called
Hydrochlorite
Hydrochloric
Hypochlorite
Hypochlorous
A flow of 1,000,000 gallons per day is equal to
556 gmp
694 gpm
1440 gpm
60,000 gmp
Water velocity is usually expressed in terms of
FPS ( Feet per second)
GPM ( Gallons per minute)
MPH (Miles per hour)
MGD (Million Gallons per day)
In what units is the rate of air flow from a blower normally measured?
Milligrams per liter
Feet per mintue
Grains per gallon
Cubic feet per minute
What is indicated about the water supply when a single water sample is reported safe?
The water supply can be commercially sold for the next year
The water supply is adequately protected
The water supply may be regarded as safe until additional samples are requested
The water supply was safe at the sampling point at the time of the sampling
A chemical feeder will feed at a maximum rate of 2,000 pounds per day. When is the maximumn feed in pounds per minute ?
1.39 pounds per minute
1.67 pounds per minute
3.21 pounds per minute
8.34 pounds per minute
What should an operator do when taking a sample for bacteriological analysis?
Always rinse out the bottle with water before taking the sample and let the water run for 10 to 15 minutes
Let the water rum until there is a representative sample before filling the bottle and quickly cap it after collecting the sample
Take no special precautions in order to have a more representative sample
Take the sample at a kitchen sink whenever possible to obtain a better representative sample and let the water run for 10 minutes
a hazardous atmosphere is detected in a confined space. An operator may safely enter the space
After the ventilation equipment has been turned on
By wearing an emergency breathing apparatus
Only when the area is free of hazardous conditions
When wearing a safety harness
Chlorine leaks around a gas chlorinator can be detected by the use of concentrated
Ammonia vapor
Hypochlorite
Lime
Soda ash
After disinfection water from a full tank must be tested for what before the tank is put back into service?
Iron contamination
Bacteriological presence
Manganese levels
Barium concentration
Prepared water sample bottles used for collecting samples for bacteriological examination contain sodium thiosulfate crystals. Why is it important not to rinse out the sample bottle?
Sodium thiosulfate eliminates the need for refrigerating the sample
Sodium thiosulfate holds the pH at a constant value
Sodium thiosulfate kills any pathogens that may be preset in the sample
Sodium thiosulfate neutralizes any chlorine present in the sample
Where should an operator look for information about equipment preventative maintenance procedures, materials , and frequencies ?
The equipment blueprints
The maintenance records
The manufacturers directions
The plant operating permit
The amount of thrust exerted at any particular fitting depends on all but which of the following?
Type of fitting
Pipe materials
Diameter of fitting
Water pressure
What is the best protection against cross-connection
Air gap
Backflow preventer
Check valve
Constant positive pressure
How often should a lead washer be used when connecting a new chlorine cylinder
Never
Once
Twice
Constant positive pressure
What is the first step towards an effective contingency plan for emergencies ?
Complete an assessment of vulnerability
Establish a communication procedure
Inventory repair supplies
Make a detailed emergency operations plan
What does the term head mean in a pumping system?
The depth of water table after pumping
The discharge height of a pipe
The distance between the water surface in a tank and the top of the wall
The pressure in terms of water column height
When a section of water main is replaced, if any organic material is allowed to remain inside the pipe it will
Decrease turbidity
Decrease chlorine residual
Increase head loss
Decrease head loss
The first step in calculating the amount of paint to purchase when painting your shop floor is to calculate the area of the floor. The shop is 19 feet 4 inches long, and 21 feet 4 inches wide and 8 feet high. What is the area of the floor in square feet?
40 Square ft
144 Square ft
410 Square ft
412 Square ft
The most common type of pump found station is a _____ pump
Centrifugal
Gear
Positive displacement
Turbine
Which of the following water quality indicators is frequently used as a day-to-day indicator of the corrosive nature of water?
Chlorine residual
Turbidity
Fluoride
PH
Lines that are most likely to freeze in very cold climates are
Shallow lines under lightly traveled streets with high flows
Shallow lines with constant flow
Shallow lines located off the road under deep snow banks that have intermittent flows
Shallow lines under heavily traveled streets with intermittent flows and sags in the line
When starting a centrifugal pump, it should be
Full of compressed air
Full of SAE 30 oil
Full of water
On 2-phase power
Which of the following is a use of polyphosphate in water treatment
Control algae
Improve taste
Keep iron and manganese in solution
Kill bacteria
What needs to be done in a ground level storage tank to protect the water from contamination ?
Construct the tank below ground level
Provide the tank with an air-tight-seal
Provide the tank with cathodic protection
Included screened vents and overflows on the tanks
Who is the primarily responsible for an operators safety ?
The operator
The operators supervisor
The state
US EPA
What is the best immediate treatment for an operator who has acid in there eyes
Do nothing
Flood the eye with cool water
Neutralize the eye with alkali
Wash the eye with alcohol
For a centrifugal pump with packing, the packing gland should be tightened
Snug against the impeller
To allow a steady drip of water from the pump
To prevent water leakage
Until the lantern ring snaps into its seat
What is the primary purpose in a distribution system?
Equalized supply and demand
Provide chlorine contact time
Allow settling
Allow pumps to run continuously
Which of the following is a method of calculating water loss in a distribution system ?
Periodic check of all meters
Subtract total of all individual meter readings from the master meter total
Add 100 gallons per day for each meter that is broken
Compare pressure at elevated tank to system pressure at the end of the system
The results of a pH test indicates the
Chlorine residual
Presence of iron
Presence of coliform organisms
Balance between acid and alkaline conditions
Best to use on a oil and electrical fire?
Dry powder
Foamite
Water
Soda acid
The main purpose of any water utility is to
Deliver to its customers a continuous, adequate and safe supply of water
Provide an adequate supply of water for fire fighting
Provide a fair portion of the citys revenue
Provide employment for city officials
In order to comply with safety regulations all couplings on pumps must be
Able to rotate freely
Guarded
Tight
Properly aligned
Dry barrel fire hydrants have operating valves in the
Base
Head
Street
Water main
What is chlorine residual
The amount of chlorine remaining in the chlorine cylinder after the available chlorine has been used
The amount of chlorine remaining after the chlorine demand has been satisfied
The amount of chlorine in the equipment after shutdown
The floating solids left on the chlorine contact tank
A storage tank filled with water is 30 feet deep and 20 feet in diameter. What is the pressure at the bottom?
9 psi
13 psi
20 psi
30 psi
Which of these chemicals could be used for disinfections?
Calcium hypochlorite
Muriatic acid
Sodium chlorine
Sodium hydroxide
The pH meter should be standardized
Before each use
Weekly
Monthly
Once
A chlorine feed room should be
Closed with no ventilation
Open at the top
Mechanically ventilated near the floor
Mechanically ventilated near the ceiling
What does the stem on a rising stem valve indicate?
Type of pump to be used
Type of fluid in the lines
Position of the gate
Direction of flow
What does the stem on a rising stem valve indicate
Type of pump to be used
Type of fluid in the lines
Position of the gate
Direction of flow
Which of the following may cause taste and odor problems in a storage facility ?
Calcium carbonate
Wrong pump side
Negative pressure in the main
High chlorine residual
Maintenance performed on the hypochlorinator pump and should be based on?
The feed rate
The manufacturers specification
The plant flow rate
Trail and error
When testing for residual chlorine, the operation should
Keep the sample in direct light until tested
Let the sample come to room temperature
Shake the same vigorously before testing
Take a grab sample with minimal agitation
Why are iron and manganese removed from drinking water?
To prevent cancer
To prevent dental caries
To prevent odor
To prevent staining
Which of the following should always be included on a sample label ?
The name or initials of the person running the analysis
The weather conditions when the sample was collected
The date, time , and location of the sample collection
The name and address of the treatment facility
Sodium hypochlorite is a
Compound that can be purchased in liquid solution and used for disinfection
Dry neutralizing power for chlorine burns
Gas delivered in 100 Ibs, 150Lbs, and 1ton cylinders
Salt that is formed when hydrochloric acid is neutralized by sodium hydroxide
Which of the following type of valve is the most suitable for the throttling application low-flow and low- pressure conconditions?
Butterfly
Check
Gate
Plug
The main advantage of good sound public relations is to
Attain a friendly and sympathetic press
Build a good relationship between the department and the public
Gain public support for wage increases and better working conditions
Increase public interest in building projects
Which of the following represents the usual pH range of normal surface and groundwater?
0 to 1.0
1.0 to 4.0
6.8 to 8.5
9.0 to 10.5
Distribution system pressure ( even during fire-fighting demands) should not be allowed to drop below
0 psi
5 psi
20 psi
40 psi
What is the valve you would most likely find on the discharge side of the pump?
Ball
Butterfly
Check
Gate
A purchase order system effectively used by a utility provides
An accurate and accessible record of purchases
Date processing printouts of all purchases
Compliance with the uniform system of accountants
The lowest prices
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