Exam (elaborations)
Water Treatment Sac State Practice Exam|266 Questions and Solutions
Water Treatment Sac State Practice Exam|266 Questions and Solutions
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Water Treatment Sac StatePractice Exam|266 Questions and
Solutions
1. Intrusion of seawater into groundwater basins results from _ - -
overpumping fresh water
-2. What is the basic objective of the operation of water treatment plants?
1. Ensure that people drink plenty of water each day to support healthy
lifestyles
2. Increase water use and encourage water-intensive landscaping
3. Produce safe, aesthetically pleasing drinking water at a reasonable cost
4. Provide opportunities for professional advancement and salary increases -
-Produce safe, aesthetically pleasing drinking water at a reasonable cost
-3. What is one characteristic of a community water system?
1. Regularly serves at least 25 full-time residents
2. Regularly serves at least 25 people who are not residents
3. Regularly serves fewer than 25 full-time residents
4. Regularly serves fewer than 25 of the same
individuals - -Regularly serves at least 25 full-time residents
-4. Which of the following influence the size of a water treatment plant as
well as the number and types of processes it uses?
1. Expected water rates and projected profits
2. Impurities in raw water and cost considerations
3. National average rainfall and snowpack levels
4. Local landscaping styles and native plant programs - -Impurities in raw
water and cost considerations
-5. Which plant operating guidelines are routinely monitored by water
treatment plant operators?
1. Equipment cleaning and painting schedules
2. Flows and water quality indicators
3. Number and frequency of public tours
4. Vehicle mileage and fuel usage - -Flows and water quality indicators
-6. What is one purpose of clear wells or plant storage reservoirs?
1. Act as a trigger for ON/OFF cycling of finished water pumps
2. Allow clarification of water by providing time for particulates to settle out
3. Allow drawdown when demands are low to perform maintenance
4. Provide operational storage to average out high and low flow demands - -
Provide operational storage to average out high and low flow demands
, -7. How would you verify the actual raw water flow rate after adjusting the
pumping rate to a water treatment plant?
1. Check reservoir levels
2. Count the number of pumps in service
3. Read the raw water flow measuring device
4. Rework the flow calculations - -Read the raw water flow measuring device
-8. How are the initial selection of chemical types and anticipated feed rates
for a given application in a water treatment plant usually deter-mined?
1. Computer modeling
2. Jar tests
3. Marble tests
4. Pilot-plant tests - -Pilot-plant tests
-9. What is the best source of information about dangerous chemicals?
1. Chemical analysis from a certified laboratory
2. Safety data sheets (SDS)
3. Trial and error tests
4. Verbal reports from other operators - -Safety data sheets (SDS)
-11. Which of these chemicals is one of the most dangerous common
alkalies?
1. Calcium hydroxide
2. Caustic soda
3. Chlorine
4. Sodium bicarbonate - -
-11. Which of these chemicals is one of the most dangerous common
alkalies?
1. Calcium hydroxide
2. Caustic soda
3. Chlorine
4. Sodium bicarbonate - -Caustic soda
-12. What should you do if an operator is not breathing due to chlorine gas
exposure?
1. Cover victim with a blanket
2. Flush victim's eyes with water
3. Perform hands-only or conventional CPR
4. Provide victim with milk - -Perform hands-only or conventional CPR
-13. Water samples taken to measure compliance with water quality
standards are usually collected at _ - -entrance to the distribution system
, -14. In a water treatment plant, turbidity is commonly monitored at _, _, _, _,
and _ - -source water, flocculation effluent, sedimentation effluent, and filter
effluent
-10. The chlorine cylinder in service has less than 1 day's chlorine supply
remaining. Three 150 lb chlorine cylinders are in storage. The plant uses an
average of 28 pounds of chlorine per day (lb/d).
How many days' supply of chlorine is available?
1. 13 days
2. 14 days
3. 15 days
4. 16 days - -16 days
-15. The range of turbidity removal effectiveness is
important because of the relationship between turbidity and _ - -pathogenic
organisms
-16. Federal laws include sludge from a water
Treatment Plant as a _ waste that requires proper handling and disposal. - -
Industrial
-17. What should an operator do promptly when a treatment process upset
results in the failure to meet a specific drinking water quality standard?
1. Apply to EPA for a waiver
2. Notify appropriate local health authorities
3. Stop operating process
4. Switch sources of raw water - -Notify appropriate local health authorities
-18. If a water treatment plant must be dewatered for emergency repairs,
how would you prepare for this event?
1. Empty all storage reservoirs before repairs
2. Fill all storage reservoirs by early evening
3. Rewrite preventive maintenance program
documents
4. Take photos of failed equipment - -Fill all storage reservoirs by early
evening
-19. What kinds of records are operators required to keep on file for
specified time periods for regulatory compliance?
1. Annual vehicle mileage and maintenance
2. Breakroom and restroom cleaning schedules
3. 'Timesheets and retirement contribution records
4. Water quality analysis and customer complaints - -Water quality analysis
and customer complaints
, -20. What is one way of keeping track of how much time and money is spent
doing various types of
work?
Tablectronic timesheets
2. Operator diaries
3. Preventive maintenance program
4. Work order system - -Work order system
-21. How can energy requirements for lighting be reduced in a water
treatment plant?
1. Keep lights on in unoccupied spaces
2. Light all areas of the yard
3. Turn off lights in unoccupied spaces
4. Use mercury vapor lamps - -Turn off lights in unoccupied spaces
-22. What regulations require that accurate records of water treatment plant
operations be maintained?
1. Americans with Disabilities Act
2. Freedom of Information Act
3. Occupational Safety and Health Act
4. Safe Drinking Water Act - -Safe Drinking Water Act
-23. What contributes to most treatment plant accidents?
1. Application and knowledge of safe procedures
2. Availability and convenience of safety equipment
3. Carelessness and negligence
4. Plant design and construction - -Carelessness and negligence
-24. What is the responsibility of water treatment plant operators?
1. Avoid boil-water orders
2. Minimize costs of producing drinking water
3. Produce safe and pleasant drinking water
4. Successfully pass operator certification
examinations - -Produce safe and pleasant drinking water
-25. What do most states require for someone to work as a water treatment
plant operator?
1. College diploma
2. Driver's license
3. First-aid training
4. Operator certificate - -Operator certificate
-A. A condition in which atmospheric or dissolved oxygen (DO) is not present
in the aquatic (water) environment. - -Anaerobic
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