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

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

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

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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