Licensed Master Plumber: Backflow Practice Test

100 Questions | Total Attempts: 7093

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Backflow Quizzes & Trivia

Welcome people, here we have got you an ultimate practice test on essentials for being a Licensed Master Plumber. This test precisely focuses on the topic of Backflow. If you are an aspirant in this field and preparing for the final exam, then take this practice test, it will be of great help to put your knowledge on the test.


Questions and Answers
  • 1. 
    WHERE IS THE #2 TEST COCK OF A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY LOCATED? 
    • A. 

      UPSTREAM OF SHUT-OFF VALVE #1

    • B. 

      UPSTREAM OF CHECK VALVE #1

    • C. 

      DOWNSTREAM OF SHUT-OFF VALVE #2

    • D. 

      DOWNSTREAM OF THE #2 CHECK VALVE

    • E. 

      BETWEEN #1 AND #2 CHECK VALVE

  • 2. 
    WATER CONTINUOUSLY LEAKING FROM TEST COCK #2 DURING A TEST PROCEDURE OF A PRESSURE VACUUM BREAKER ASSEMBLY IS  PROBABLY CAUSED BY A LEAKING: 
    • A. 

      AIR INLET VALVE

    • B. 

      TEST COCK #1

    • C. 

      INLET SHUT-OFF VALVE #1

    • D. 

      OUTLET SHUT-OFF VALVE #2

  • 3. 
    WHICH ARE 2 TYPES OF CROSS CONNECTIONS?
    • A. 

      POLLUTANT A CONTAMINANT

    • B. 

      BACKSIPHONAGE & BACKPRESSURE

    • C. 

      LOW & HIGH

    • D. 

      TOXIC &NON-TOXIC

    • E. 

      DIRECT & INDIRECT

  • 4. 
    • A. 

      THE AIR INLET VALVE

    • B. 

      THE BOTTOM OF THE INLET PIPING

    • C. 

      SHUT-OFF VALVE #2

    • D. 

      THE BOTTOM OF THE VALVE BODY

    • E. 

      THE BOTTOM OF THE DISCHARGE PIPING

  • 5. 
    WHERE WILL AN ATMOSPHERIC VACUUM BREAKER USUALLY BE INSTALLED? 
    • A. 

      IN A BOILER SYSTEM MAKE-UP LINE

    • B. 

      IN THE SERVICE CONNECTION TO A RESIDENCE

    • C. 

      IN THE SERVICE CONNECTION TO A CAR WASH

    • D. 

      IN A FIRE SPRINKLER SYSTEM

    • E. 

      IN NONE OF THE ABOVE

  • 6. 
    WHEN PROTECTED BY A PIPE APPLIED ATMOSPHERIC VACUUM BREAKER, A 2" INLET TO A TANK SHALL BE INSTALLED AT LEAST__________ ABOVE THE  FLOOD LEVEL OF THE TANK. 
    • A. 

      2"

    • B. 

      4"

    • C. 

      6"

    • D. 

      8"

    • E. 

      12"

  • 7. 
    WHAT IS THE SUGGESTED MINIMUM VERTICAL DISTANCE BETWEEN THE RELIEF VALVE DISCHARGE PORT OF A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER ASSEMBLY AND THE FLOOR PLANE? 
    • A. 

      6"

    • B. 

      12"

    • C. 

      18"

    • D. 

      24"

    • E. 

      30"

  • 8. 
    WHICH OF THE FOLLOWING IS NOT A TYPICAL TEST COCK ADAPTER FITTING SIZE? 
    • A. 

      1/8” x 1/4”

    • B. 

      ¼” x ¼”

    • C. 

      3/8" x ¼”

    • D. 

      ½” x ¼”

    • E. 

      3/4 X ¼”

  • 9. 
    WHEN PERFORMING A FIELD TEST OF A REDUCED PRESSURE PRINCIPLE BACKFLOW ASSEMBLY, THE #2 TEST COCK SHOULD BE: 
    • A. 

      FLUSHED 1ST

    • B. 

      NOT FLUSHED AT ALL

    • C. 

      FLUSHED WITH CAUTION TO PREVENT A PREMATURE RELIEF VALVE DISCHARGE

    • D. 

      PLUGGED

    • E. 

      FLUSHED LAST

  • 10. 
    THE RELIEF VALVE ON A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER REMAINS CLOSED DURING NORMAL OPERATION DUE TO: 
    • A. 

      SUPPLY SIDE PRESSURE

    • B. 

      THE RELIEF VALVE SPRING

    • C. 

      ZONE PRESSURE

    • D. 

      ALL OF THE ABOVE

  • 11. 
    "CONTAINMENT" PROTECTION": 
    • A. 

      PROTECTS ALL CONSUMERS ON A PUBLIC WATER SYSTEM

    • B. 

      OFFERS NO PROTECTION TO INDIVIDUALS WITHIN A FACILITY

    • C. 

      PREVENTS BACKSIPHONAGE ONLY

    • D. 

      ALL OF THE ABOVE

  • 12. 
    WHERE IS THE BEST LOCATION FOR THE INSTALLATION OF A BACKFLOW PREVENTION ASSEMBLY? 
    • A. 

      IN A PIT — PROVIDED IT HAS A COVER

    • B. 

      UNDERGROUND

    • C. 

      IN AN EASILY ACCESSIBLE LOCATION IN A HEATED BUILDING

    • D. 

      AT OR NEAR THE CEILING IN THE BASEMENT

  • 13. 
    A CERTIFIED TESTER MUST DESCRIBE THE PROPER APPLICATION OF A BACKFLOW PREVENTCN ASSEMBLY AND THEIR LIMITATIONS WITH RESPECT TO:   
    • A. 

      MINIMUM & MAXIMUM ASSEMBLY WORKING PRESSURE

    • B. 

      MINIMUM & MAXIMUM ASSEMBLY WORKING TEMPERATURE

    • C. 

      BACKFLOW & DEGREE OF HAZARD

    • D. 

      ALL OF THE ABOVE

    • E. 

      NONE OF THE ABOVE

  • 14. 
    A CERTIFIED TESTER MUST RECORD ALL THE FOLLOWING PHYSICAL IDENTIFICATION OF A BACKFLOW PREVENTION ASSEMBLY EXCEPT: 
    • A. 

      MANUFACTURER

    • B. 

      DEGREE OF HAZARD

    • C. 

      MODEL #

    • D. 

      SERIAL #

    • E. 

      LOCATION OF ASSEMBLY

  • 15. 
    THE FOLLOWING STATEMENT IS CORRECT IN REGARDS TO A PIPE APPLIED ATMOSPHERIC VACUUM BREAKER... 
    • A. 

      INCLUDES AN UPSTREAM SHUT-OFF VALVE

    • B. 

      INCLUDES A SPRING LOADED CHECK VALVE

    • C. 

      IS USED FOR LOW HAZARD PROTECTION ONLY

    • D. 

      INCLUDES A SPRING LOADED AIR INLET VALVE

    • E. 

      MUST BE USED FOR BACKSIPHONAGE PROTECTION ONLY

  • 16. 
    WHY MUST ADEQUATE CLEARANCE BE PROVIDED ABOVE A BACKFLOW PREVENTION  ASSEMBLY? 
    • A. 

      FOR THE OPERATION OF THE SHUT-OFF VALVES

    • B. 

      FOR MAINTENANCE & REPAIR

    • C. 

      FOR TESTING PURPOSES

    • D. 

      FOR VISUAL INSPECTION OF THE ASSEMBLY

    • E. 

      ALL OF THE ABOVE

  • 17. 
    TO CONVERT "FEET OF HEAD" TO PSI, YOU MUST. 
    • A. 

      MULTIPLY BY 1.5

    • B. 

      MULTIPLY BY 3.339

    • C. 

      MULTIPLY BY.433

    • D. 

      MULTIPLY BY 14.7

    • E. 

      MULTIPLY BY 144.

  • 18. 
    SCENARIO…………… A TESTER IS DOING A FIELD TEST ON A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER. DURING THE TEST, A LEAKING #2 CHECK VALVE IS FOUND. AFTER MAKING THE NECESSARY REPAIRS, WHAT IS THE NEXT STEP? 
    • A. 

      THE #2 CHECK VALVE SHOULD BE RETESTED

    • B. 

      THE ENTIRE ASSEMBLY SHOULD BE RETESTED

    • C. 

      THE RELIEF VALVE SHOULD BE RETESTED

    • D. 

      THE #1 CHECK VALVE SHOULD BE RETESTED

    • E. 

      THE ASSEMBLY IS APPROVED WITH NO RETESTING

  • 19. 
    • A. 

      A LEAKING #1 SHUT-OFF VALVE

    • B. 

      LOW WATER SUPPLY PRESSURE

    • C. 

      AIR TRAPPED INSIDE THE RELIEF VALVE

    • D. 

      EXCESSIVE BACKPRESSURE

    • E. 

      A MALFUNCTION OF THE RELIEF VALVE MECHANISM

  • 20. 
    • A. 

      THE AIR INLET VALVE SHOULD BE WIRED CLOSED

    • B. 

      REMOVE THE CHECK VALVE

    • C. 

      REPLACE THE CANOPY COVER

    • D. 

      INCREASE THE SUPPLY PRESSURE

    • E. 

      REMOVE THE AIR INLET VALVE

  • 21. 
    BACKSIPHONAGE CAN BE CAUSED BY AN UNDERSIZED WATER PIPE CARRYING WATER AT A HIGH VELOCITY DUE TO: 
    • A. 

      A VACUUM EFFECT

    • B. 

      A PIVOT EFFECT

    • C. 

      A VENTURI EFFECT

    • D. 

      A MARGINAL EFFECT

    • E. 

      A GRAVITY EFFECT

  • 22. 
    WHAT IS THE PRIMARY CAUSE OF THE REVERSAL OF FLOW OF WATER IN A PIPING SYSTEM? 
    • A. 

      THE LENGTH OF THE PIPING SYSTEM

    • B. 

      LOW FLOW CONDITIONS

    • C. 

      THE SIZE OF THE PIPE

    • D. 

      THE REVERSAL OF A PUMP

    • E. 

      THE LOSS OF PRESSURE IN THE SYSTEM

  • 23. 
    WHAT TYPE OF PROTECTION IS PROVIDED BY A BAROMETRIC LOOP? 
    • A. 

      BACKPRESSURE BACKFLOW

    • B. 

      AN ATMOSPHERIC BREAK

    • C. 

      BACKSIPHONAGE BACKFLOW

    • D. 

      BACKPRESSURE & BACKSIPHONAGE BACKFLOW

  • 24. 
    A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER IS NOT REQUIRED AT THE SERVICE CONNECTION OF THIS FACILITY... 
    • A. 

      A CAR WASH

    • B. 

      A SEWAGE TREATMENT PLANT

    • C. 

      A PLATING PLANT

    • D. 

      IN A SINGLE FAMILY DWELLING

    • E. 

      A HOSPITAL

  • 25. 
    THE PROPER INSTALLATION OF A PIPE APPLIED ATMOSPHERIC VACUUM BREAKER ON AN IRRIGATION SYSTEM PERMITS THE DOWNSTREAM PIPING TO BE ELEVATED ABOVE THE ATMOSPHERIC VACUUM BREAKER PROVIDED... 
    • A. 

      THERE ARE NO CONTROL VALVES DOWNSTREAM

    • B. 

      THE SPRINKLER HEADS ARE AT LEAST 6" BELOW THE AVB

    • C. 

      A HOSE BIBB IS INSTALLED DOWNSTREAM

    • D. 

      A SHUT-OFF VALVE IS INSTALLED DOWNSTREAM

    • E. 

      NEVER

  • 26. 
    WHICH OF THE FOLLOWING IS AN ACCEPTABLE BACKFLOW PREVENTION DEVICE? 
    • A. 

      A SWIVEL CONNECTION

    • B. 

      A SPOOL PIECE

    • C. 

      A 4-WAY CONTROL VALVE

    • D. 

      2 SWING CHECK VALVES IN TANDEM

    • E. 

      NONE OF THE ABOVE

  • 27. 
    • A. 

      TO DETERMINE FLOW THROUGH THE DEVICE

    • B. 

      TO EQUALIZE PRESSURE ON BOTH SIDES OF THE CHECK VALVE

    • C. 

      TO PROTECT THE TEST GAUGES FROM DAMAGES

    • D. 

      TO REMOVE LODGED FOREIGN MATERIAL

    • E. 

      DETERMINE THAT THE TEST COCKS ARE NOT PLUGGED

  • 28. 
    • A. 

      BY INSTALLING A PRESSURE REGULATING VALVE ON THE SUPPLY PIPE

    • B. 

      BY INSTALLING A SOFT SEAT CHECK VALVE UPSTREAM OF THE ASSEMBLY

    • C. 

      BY INSTALLING A GLOBE VALVE ON THE DOWNSTREAM PIPING

    • D. 

      BY INSTALLING A SOFT SEAT CHECK VALVE DOWNSTREAM OF THE ASSEMBLY

    • E. 

      BY INSTALLING A STRAINER UPSTREAM OF THE ASSEMBLY

  • 29. 
    ON WHICH OF THE FOLLOWING IS IT NECESSARY TO RECORD THE PRESSURE DIFFERENTIAL AT WHICH THE RELIEF VALVE OPENS DURING A FIELD TEST? 
    • A. 

      REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER

    • B. 

      DOUBLE CHECK DETECTOR ASSEMBLY BACKFLOW PREVENTER

    • C. 

      DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY

    • D. 

      REDUCED PRESSURE DETECTOR BACKFLOW PREVENTER

    • E. 

      BOTH A & D

  • 30. 
    A FACILITY REQUIRING CONTCNOUS WATER SUPPLY SHOULD DO THIS WHEN INSTALLING A "CONTAINMENT" DEVICE 
    • A. 

      IINSTALL A DEVICE WITH A BYPASS ARRANGEMENT TO PROVIDE UNDERGROUND SERVICE

    • B. 

      INSTALL 2 SIMILAR DEVICES IN PARALLEL

    • C. 

      MAINTAIN A SPARE PARTS KIT IN CASE OF DEVICE FAILURE

    • D. 

      USE A BYPASS HOSE TO TEST THE DEVICE

  • 31. 
    HOW OFTEN SHOULD ALL TESTING EQUIPMENT BE RECALIBRATED,  ACCORDING TO THE ANSI / ASSE SERIES 5000? 
    • A. 

      WHENEVER THE TESTER THINKS SO

    • B. 

      EVERY 5 YEARS

    • C. 

      ACCORDING TO THE TESTING EQUIPMENT MANUFACTURERS INSTALLATION INSTRUCTIONS

    • D. 

      ALL OF THE ABOVE

    • E. 

      NONE OF THE ABOVE

  • 32. 
    A CROSS CONNECTION CONTROL SURVEYS CHECKLIST EXCLUDES THE FOLLOWING—PER THE ANSI / ASSE SERIES 5000. 
    • A. 

      ASSEMBLY IDENTIFICATION

    • B. 

      ASSEMBLY & DEVICE LOCATIONS

    • C. 

      POTENTIAL CROSS CONNECTIONS

    • D. 

      LOCAL CODES

    • E. 

      NONE OF THE ABOVE

  • 33. 
    THE UNINTENTIONAL REVERSAL OF FLOW IN A POTABLE WATER SYSTEM WHICH MAY RESULT IN CONTAMINATION OR POLLUTION OF THE SYSTEM, 
    • A. 

      TOXIC

    • B. 

      BACKFLOW PREVENTER

    • C. 

      NON-POTABLE WATER

    • D. 

      BACKSIPHONAGE

    • E. 

      BACKFLOW

  • 34. 
    WHAT IS THE RECOMMENDED MINIMUM SIDE CLEARANCE FROM A WALL FOR A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY? 
    • A. 

      6"

    • B. 

      12"

    • C. 

      18"

    • D. 

      24"

    • E. 

      36"

  • 35. 
    WHAT MUST BE INCLUDED WITH AN APPROVED BACKFLOW PREVENTION ASSEMBLY? 
    • A. 

      BALL VALVES FOR SHUT-OFF VALVES

    • B. 

      UPSTREAM STRAINER

    • C. 

      RESILIENT SEATED SHUT-OFF VALVES

    • D. 

      STAINLESS STEEL CHECK VALVES

    • E. 

      SINGLE HANDLE TEST COCKS

  • 36. 
    WATER SERVICE CONNECTIONS BEING UTILIZED BY COMPANIES USING A CONTAMINATED WATER SUPPLY FOR FIRE PROTECTION MUST BE PROTECTED WITH    
    • A. 

      A DUAL CHECK VALVE BACKFLOW PREVENTER

    • B. 

      A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY

    • C. 

      A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER

    • D. 

      AN AIR GAP SEPARATION

    • E. 

      A PRESSURE VACUUM BREAKER ASSEMBLY

  • 37. 
    IF ……            Q = VOLUME V = AVERAGE VELOCITY A = CROSS SECTIONAL AREA OF THE PIPE   WHAT IS THE CORRECT FORMULA TO USE FOR CALCULATING THE VOLUME FLOW RATE? 
    • A. 

      Q=A/V

    • B. 

      Q=V-A

    • C. 

      Q=V/A

    • D. 

      Q =AxV

  • 38. 
    HOW OFTEN SHOULD TEST EQUIPMENT BE CHECKED FOR CALIBRATION? (RECOMMENDED) 
    • A. 

      MONTHLY

    • B. 

      QUARTERLY

    • C. 

      SEMI - ANNUALLY

    • D. 

      ANNUALLY

    • E. 

      AT THE TIME OF PURCHASE ONLY

  • 39. 
    • A. 

      ABNORMAL OPERATING PRESSURE

    • B. 

      THE SHUT-OFF VALVE IS NOT FULLY OPEN AND AIR IS TRAPPED IN THE DEVICE

    • C. 

      EXCESSIVE BACKPRESSURE

    • D. 

      CHECK DISC COMPRESSION

  • 40. 
    • A. 

      AT THE HIGH PRESSURE HOSE GAUGE CONNECTION

    • B. 

      AT THE BYPASS HOSE GAUGE CONNECTION

    • C. 

      AT THE LOW PRESSURE HOSE GAUGE CONNECTION

    • D. 

      AT TEST COCK #1

    • E. 

      AT TEST COCK #2

  • 41. 
    THE MAXIMUM DISTANCE THAT AN ABSOLUTE VACUUM AT SEA LEVEL CAN LIFT A COLUMN OF WATER IS 
    • A. 

      2.3'

    • B. 

      4.6'

    • C. 

      11.5'

    • D. 

      14.7'

    • E. 

      33.9'

  • 42. 
    WHAT IS THE REASON FOR THE METER ON A DOUBLE CHECK DETECTOR ASSEMBLY BACKFLOW PREVENTER? 
    • A. 

      TO DETECT ANY BACKFLOW

    • B. 

      TO BYPASS THE WATER METER

    • C. 

      TO TEST THE ALARM SYSTEM

    • D. 

      TO DETERMINE THE DIRECTION OF FLOW

    • E. 

      TO DETECT UNAUTHORIZED WATER USAGE

  • 43. 
    AN UNPROTECTED BYPASS AROUND A BACKFLOW PREVENTION ASSEMBLY OR DEVICE. 
    • A. 

      IS CONSIDERED TO BE A CROSS CONNECTION AND NEVER PERMITTED

    • B. 

      MUST BE WITHIN 3' OF THE DEVICE

    • C. 

      MUST HAVE A CHECK VALVE

    • D. 

      MUST BE THE SAME SIZE

  • 44. 
    WHAT NORMALLY PROTECTS THE POTABLE WATER SUPPLY TO A URINAL EQUIPPED WITH A FLUSHOMETER VALVE? 
    • A. 

      REDUCED PRESSURE PRINCIPLE BACKFLOW ASSEMBLY

    • B. 

      DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY

    • C. 

      PIPE APPLIED ATMOSPHERIC VACUUM BREAKER

    • D. 

      DUAL CHECK TYPE BACKFLOW PREVENTER

    • E. 

      PRESSURE VACUUM BREAKER ASSEMBLY

  • 45. 
    AN ABSOLUTE PRESSURE OF 25 PSIA (AT SEA LEVEL) IS EQUAL TO APPROXIMATELY., 
    • A. 

      5 PSIG

    • B. 

      10 PSIG

    • C. 

      15 PSIG

    • D. 

      20 PSIG

    • E. 

      25 PSIG

  • 46. 
    • A. 

      SERIAL # OF THE ASSEMBLY

    • B. 

      TEST RESULTS OF CHECK VALVE #1

    • C. 

      TEST RESULTS OF CHECK VALVE #2

    • D. 

      ADDRESS OF THE INSTALLATION

    • E. 

      DIFFERENTIAL PRESSURE RELIEF VALVE DISCHARGE

  • 47. 
    The physical operation of a HOSE CONNECTION VACUUM BREAKER is classified as a type of.. 
    • A. 

      Dual check valve type backflow preventer

    • B. 

      Atmospheric vacuum breaker

    • C. 

      Backflow preventer with intermediate atmospheric vent

    • D. 

      Pressure vacuum breaker assembly

  • 48. 
    The degreeof hazard is 
    • A. 

      Temperature of a non-potable water source

    • B. 

      The angle of the backflow assembly

    • C. 

      Based upon the quality of a non-potable water system

    • D. 

      Distance between the cross connection and the back low assembly

  • 49. 
    The LABORATORY FAUCET BACKFLOW PREVENTER is NOT intended to be 
    • A. 

      Hydraulically shocked

    • B. 

      Installed in areas without toxic fumes

    • C. 

      Operated with continuous pressure

    • D. 

      Washed with de-ionized water

  • 50. 
    If, during a field test of a REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER, the tester finds a leaking #2 check valve, the repairs should be made and the 
    • A. 

      #2 check valve retested

    • B. 

      Entire assembly is retested

    • C. 

      #1 check valve retested

    • D. 

      Assembly should be approved without retesting

  • 51. 
    A term that describes the quality of water that is impaired in respect to taste, odor, or utility,but does not constitute a health hazard is…… 
    • A. 

      Toxic

    • B. 

      Pollutant

    • C. 

      Back-siphonage

    • D. 

      Containment

  • 52. 
    Atmospheric pressure is…… 
    • A. 

      The pressure exerted by the height of a water column

    • B. 

      The pressure exerted by the weight of the atmosphere (14.7 psi at sea level)

    • C. 

      Increased as the elevation above sea level increases

    • D. 

      Decreased as the elevation above sea level decreases

  • 53. 
    The following absolute pressure could cause backsiphonage to occur in a hydraulic system (distribution system) at sea level, 
    • A. 

      10.5 psia

    • B. 

      15.0 psia

    • C. 

      33.9 psia

    • D. 

      100 psia

  • 54. 
    An ATMOSPHERIC TYPE VACUUM BREAKER'S critical component subject to failure is the:  
    • A. 

      Upstream shutoff valve

    • B. 

      Loaded check valve

    • C. 

      Canopy

    • D. 

      Air inlet valve

  • 55. 
    An air gap separation is measured from the outlet to the….. 
    • A. 

      Fixture drain plug

    • B. 

      Level of the liquid

    • C. 

      Flood level rim of the receptacle

    • D. 

      None listed

  • 56. 
    • A. 

      14.4 Ibs.

    • B. 

      23.5 Ibs.

    • C. 

      37.5 Ibs

    • D. 

      62.4 Ibs.

  • 57. 
    Which of the following is NOT a cause of backpressure? 
    • A. 

      Elevated plumbing

    • B. 

      Thermal expansion

    • C. 

      Pumps

    • D. 

      Aspiration

  • 58. 
    According to the ASSE Series 5000, a certified tester must record all the following      physical identification of a BACKFLOW PREVENTION ASSEMBLY except: 
    • A. 

      Degree of hazard

    • B. 

      Model #

    • C. 

      Serial #

    • D. 

      Location of assembly

  • 59. 
    What type of backflow occurs with an indirect cross connection? 
    • A. 

      Backpressure

    • B. 

      Indirect

    • C. 

      Backsiphonage & backpressure

    • D. 

      Backsiphonage

  • 60. 
    The primary concern of the water purveyor where an auxiliary water system is Maintained and utilized by a customer, is to assure that…… 
    • A. 

      The auxiliary system pressure is less than the public water system pressure

    • B. 

      An approved backflow prevention assembly is installed on the service connection

    • C. 

      The auxiliary system is chlorinated

    • D. 

      The auxiliary water system is metered

  • 61. 
    ATMOSPHERIC TYPE VACUUM BREAKERS shall not be subjected to continuous water pressure for periods...   
    • A. 

      Longer than 6 hours

    • B. 

      Longer than 12 hours

    • C. 

      Longer than 18 hours

    • D. 

      Longer than 24 hours

  • 62. 
    What causes the relief valve to close on a REDUCED PRESSURE PRINCIPLE ASSEMBLY? 
    • A. 

      Relief valve spring pressure

    • B. 

      Supply side water pressure

    • C. 

      Pressure differential between check valve #1 & check valve #2

    • D. 

      All listed

  • 63. 
    This may cause a check valve to leak……. 
    • A. 

      A dirty or damaged check disc

    • B. 

      A damaged check seat

    • C. 

      A broken or damaged spring

    • D. 

      All listed

  • 64. 
    Why is the relief valve of a REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER spring loaded?   
    • A. 

      To reduce the incoming pressure

    • B. 

      To force the relief valve open

    • C. 

      To force the 1st check valve to open

    • D. 

      To force the relief valve closed

  • 65. 
    Which of the following is included in a HIGH HAZARD classification? 
    • A. 

      Radioactive waste

    • B. 

      Raw sewage

    • C. 

      Caustic soda

    • D. 

      All listed

  • 66. 
    The purpose for testing the differential pressure on a backflow assembly is to....
    • A. 

      Check spring tension

    • B. 

      Make sure check is seated

    • C. 

      Record for test report

    • D. 

      All listed

  • 67. 
    What may cause BACKSIPHONASE BACKFLOW in a water distribution system? 
    • A. 

      A loss of pressure caused by a ruptured pipe

    • B. 

      High demand

    • C. 

      A change in direction of flow

    • D. 

      All listed

  • 68. 
    A ¼” diameter potable water supply shall have at least a/an________air gap separation between the supply pipe and the flood level rim. 
    • A. 

      1/2"

    • B. 

      1"

    • C. 

      2"

    • D. 

      4"

  • 69. 
    Which of the following does NOT determine the type of test procedure to be used when testing backflow assemblies?   
    • A. 

      The size of the assembly

    • B. 

      Type of assembly

    • C. 

      Manufacturer

    • D. 

      Both a & c

  • 70. 
    The Performance Requirements for BACKFLOW PREVENTION ASSEMBLY TEST KITS recommends the test equipment be checked for calibration at least 
    • A. 

      Monthly

    • B. 

      Quarterly

    • C. 

      Semi-annually

    • D. 

      Annually

  • 71. 
    • A. 

      A PRESSURE VACUUM BREAKER ASSEMBLY should not be installed where it

    • B. 

      A REDUCED PRESSURE PRINCIPLE ASSEMBLY should be installed in place

    • C. 

      A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY should be installed

    • D. 

      Both a & b

  • 72. 
    Which of the following devices may be used to control thermal expansion problems?  
    • A. 

      Soft seating check valves

    • B. 

      Pressure relief valves

    • C. 

      Thermal expansion tanks

    • D. 

      Both b & c

  • 73. 
    A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY may NOT be used to protect against……..   
    • A. 

      Contaminants

    • B. 

      Pollutants

    • C. 

      Backpressure

    • D. 

      Backsiphonage

  • 74. 
    Which of the following is NOT a required part of an ATMOSPHERIC TYPE VACUUM BREAKER? 
    • A. 

      Air inlet float valve

    • B. 

      The body

    • C. 

      Air canopy

    • D. 

      Shutoff valve

  • 75. 
    THERMAL EXPANSION.... 
    • A. 

      Is the pressure increase which occurs in a piping system every time a water heater comes on to recover the temperature lost through the usage of hot water

    • B. 

      Occurs in any hot water system when water is heated or recovered during periods of non-use

    • C. 

      Can cause a dangerous increase in pressure

    • D. 

      All of the above

  • 76. 
    While testing a REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER, a fluctuation in the pressure differential during a static condition is caused by………   
    • A. 

      Rapidly changing supply pressure

    • B. 

      Backpressure backflow

    • C. 

      Leaking #1 check valve

    • D. 

      Leaking #2 check valve

  • 77. 
    Which shutoff valve would have to be closed before a REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER ASSEMBLY can be completely tested?   
    • A. 

      #1 only

    • B. 

      #2 only

    • C. 

      None

    • D. 

      #1 & #2

  • 78. 
    If the air inlet valve of a PRESSURE VACUUM BREAKER ASSEMBLY will not seat……. 
    • A. 

      It should be wired closed

    • B. 

      The check valve should be removed

    • C. 

      The canopy cover should be replaced

    • D. 

      The supply pressure is too low

  • 79. 
    Static pressure is……… 
    • A. 

      Produced by fluid in motion

    • B. 

      The force exerted by a fluid at rest

    • C. 

      The force exerted by a change in atmospheric pressure

    • D. 

      None listed

  • 80. 
    When field testing a backflow prevention device in a confined space, which of the following guidelines should be followed? 
    • A. 

      Review a procedure to follow in case of emergency

    • B. 

      Perform work as a team

    • C. 

      Test atmosphere before entering

    • D. 

      All listed

  • 81. 
    A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTOR's relief valve operates from the inlet water pressure and the water pressure at 
    • A. 

      The #2 shutoff valve

    • B. 

      The atmospheric vent

    • C. 

      #4 test cock

    • D. 

      Intermediate zone pressure

  • 82. 
    When testing a relief valve on a REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER ASSEMBLY, which test cocks should be open? 
    • A. 

      1 & 3

    • B. 

      1 & 4

    • C. 

      2 & 3

    • D. 

      3 & 4

  • 83. 
    Which of the following is NOT a cause of backpressure? 
    • A. 

      Elevated plumbing

    • B. 

      Thermal expansion

    • C. 

      Pumps

    • D. 

      Aspiration

  • 84. 
    To exert a pressure of 1 psi at the base of a column of water, the column would have to be_____________in height. 
    • A. 

      4.34"

    • B. 

      12"

    • C. 

      14.7"

    • D. 

      27.75"

  • 85. 
    To obtain an optional line-pressure reading while testing a DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY, a suitable pressure gauge is attached to test cock 
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      All Listed

  • 86. 
    A PRESSURE VACUUM BREAKER ASSEMBLY'S shutoff valves 
    • A. 

      Are installed at the inlet of the assembly only

    • B. 

      Are not used during a field test procedure

    • C. 

      Contain an inlet test cock on all assemblies

    • D. 

      Are located at the inlet and outlet of all assemblies

  • 87. 
    What information is NOT required on the BACKFLOW ASSEMBLY FIELD TEST REPORT? 
    • A. 

      Type of assembly

    • B. 

      Serial # of assembly

    • C. 

      Water temperature of assembly

    • D. 

      Test results

  • 88. 
    • A. 

      The DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY should be replaced with an air gap

    • B. 

      The DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY should be replaced with a dual check

    • C. 

      The DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY is the correct application, no changes needed

    • D. 

      None listed

  • 89. 
    The purpose of the ASSE Professional Qualification Standard Series 5000 is to 
    • A. 

      Establish minimum performance criteria for backflow assembly testers

    • B. 

      Establish minimum performance criteria for backflow assembly repairers

    • C. 

      Establish minimum performance criteria for backflow assembly surveyors

    • D. 

      All listed

  • 90. 
    • A. 

      Large pressure fluctuations

    • B. 

      A leaking #2 check valve with backpressure

    • C. 

      A leaking #2 shutoff valve

    • D. 

      A leaking #1 check valve

  • 91. 
    The minimum requirements for an approved air gap separation shall be at least.
    • A. 

      7 the effective opening of the supply pipe

    • B. 

      6" above the outlet of the supply pipe

    • C. 

      Twice the effective opening of the supply pipe, but not less than 1"

    • D. 

      12" above the surrounding ground or floor

  • 92. 
    ALL backflow assemblies are required to have 
    • A. 

      A check

    • B. 

      A test cock

    • C. 

      Isolation valves

    • D. 

      All listed

  • 93. 
    Before testing the #1 check valve of a DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY, you must first 
    • A. 

      Attach the high pressure hose to the test cock #3

    • B. 

      Attach the low pressure hose to test cock #2

    • C. 

      Close shutoff valve #1

    • D. 

      Flush all four test cocks

  • 94. 
    A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY test and maintenance report shall include all of the following information except the 
    • A. 

      Address of the installation

    • B. 

      Serial # of the assembly

    • C. 

      Test results of check valve #1

    • D. 

      Differential pressure relief valve discharge reading

  • 95. 
    For containment protection in a low hazard situation, the minimum protection required shall be ……     
    • A. 

      Reduced Pressure Principal Backflow preventer

    • B. 

      2 single check valves in series

    • C. 

      Double Check Backflow prevention assembly

    • D. 

      Atmospheric Type Vaccum Breaker

  • 96. 
    In addition to the air gap separation, the recommended backflow protection for the potable water supply to a pump used for handling raw sewage is a/an…… 
    • A. 

      DOUBLE CHECK DETECTOR ASSEMBLY BACKFLOW PREVENTER

    • B. 

      DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY

    • C. 

      REDUCED PRESSURE PRINCIPAL BACKFLOW PREVENTER

    • D. 

      PRESSURE VACCUM BREAKER ASSEMBLY

  • 97. 
    A backflow preventer with intermediate Atmospheric Vent must be installed to allow….. 
    • A. 

      DRAINAGE BETWEEN THE CHECK VALVES

    • B. 

      FULL-PORT FLOW

    • C. 

      HORIZONTAL FLOW

    • D. 

      HYDRAULIC SHOCK RELIEF

  • 98. 
    Potential cross connections can be 
    • A. 

      Best protected with an Atmospheric Vacuum Breaker

    • B. 

      Controlled with water pressure

    • C. 

      Permitted by a plumbing inspector

    • D. 

      Numerous, varried, and unpredictable

  • 99. 
    The federal law placing responsibility for the protection of the public water supply on the purveyor of the water is.... 
    • A. 

      OSHA

    • B. 

      Safe Drinking Water Act

    • C. 

      FDA Unicode

    • D. 

      Clean water act

  • 100. 
    An air gap, to be considered affected by two intersecting walls, must encroach upon or be within a zone, defined as______     times the effective opening of the potable water outlet in width. 
    • A. 

      1 1/2

    • B. 

      2

    • C. 

      3

    • D. 

      4