{"id":6,"date":"2023-10-26T11:31:21","date_gmt":"2023-10-26T15:31:21","guid":{"rendered":"https:\/\/opentextbc.ca\/plumbing4b\/?p=6"},"modified":"2025-05-05T17:17:55","modified_gmt":"2025-05-05T21:17:55","slug":"self-test-answer-keys","status":"publish","type":"back-matter","link":"https:\/\/opentextbc.ca\/plumbing4b\/back-matter\/self-test-answer-keys\/","title":{"raw":"Appendix 2: Self-Test Answer Keys","rendered":"Appendix 2: Self-Test Answer Keys"},"content":{"raw":"

Competency B1<\/h1>\r\n

Self-Test 1<\/h2>\r\n
    \r\n \t
  1. b. False<\/li>\r\n \t
  2. a. True<\/li>\r\n \t
  3. b. False<\/li>\r\n \t
  4. c.\u00a0125 psig<\/li>\r\n \t
  5. a. True<\/li>\r\n \t
  6. b. False<\/li>\r\n \t
  7. b. False<\/li>\r\n \t
  8. d. Any of the choices<\/li>\r\n<\/ol>\r\n

    Self-Test 2<\/h2>\r\n
      \r\n \t
    1. b.\u00a0Upstream of the automatic gas valve<\/li>\r\n \t
    2. b. False<\/li>\r\n \t
    3. c.\u00a0CSA B149.3<\/li>\r\n \t
    4. c. 100% safe<\/li>\r\n \t
    5. b. False<\/li>\r\n<\/ol>\r\n

      Self-Test 3<\/h2>\r\n
        \r\n \t
      1. b. Valve disc<\/li>\r\n \t
      2. c. Diaphragm<\/li>\r\n \t
      3. a. Spring<\/li>\r\n \t
      4. c. To maintain a constant gas pressure at the gas valve inlet<\/li>\r\n \t
      5. c. The outlet pressure under the diaphragm<\/li>\r\n \t
      6. d. The adjustable spring above the diaphragm<\/li>\r\n \t
      7. c.\u00a0The adjusting screw is screwed down<\/li>\r\n \t
      8. c.\u00a0Allow the regulator to breath<\/li>\r\n \t
      9. d. Opening force of the spring is equal to the closing force of the downstream pressure<\/li>\r\n \t
      10. c. Droop<\/li>\r\n \t
      11. b. The regulator will close completely<\/li>\r\n \t
      12. d. Keep downstream pressure closer to set point during flow conditions<\/li>\r\n \t
      13. a. Provide mechanical advantage for positive shut-off<\/li>\r\n \t
      14. b. It decreases<\/li>\r\n \t
      15. a. Service regulators<\/li>\r\n \t
      16. d. Regulator to respond slow or sluggish<\/li>\r\n \t
      17. a. The pressure downstream of a regulator under no flow conditions<\/li>\r\n \t
      18. c.\u00a02 psig<\/li>\r\n \t
      19. a.\u00a0Two stage regulation<\/li>\r\n \t
      20. c. First stage 5 psig, Second stage 2 psig<\/li>\r\n \t
      21. d. MBH<\/li>\r\n \t
      22. a. remain permanently open<\/li>\r\n \t
      23. d. to keep downstream pressure closer to set point during flow conditions.<\/li>\r\n \t
      24. b. Normally closed<\/li>\r\n<\/ol>\r\n

        Self-Test 4<\/h2>\r\n
          \r\n \t
        1. c. Thermal expansion of solids<\/li>\r\n \t
        2. d. Thermal expansion of liquids<\/li>\r\n \t
        3. a. Electro-magnetism<\/li>\r\n \t
        4. c. Thermocouple<\/li>\r\n \t
        5. d. Gas water heater<\/li>\r\n \t
        6. c. To open or close the valve seat faster<\/li>\r\n \t
        7. a. True<\/li>\r\n \t
        8. c. Appliance regulator<\/li>\r\n \t
        9. b. ECO<\/li>\r\n \t
        10. d. A second automatic shutoff valve seat<\/li>\r\n \t
        11. c. Electric Stepper motor<\/li>\r\n \t
        12. a. True<\/li>\r\n \t
        13. b. False<\/li>\r\n \t
        14. b. False<\/li>\r\n \t
        15. b. Low Fire 1 \u2013 1.5 in.WC, High Fire 3 \u2013 4 in. WC.<\/li>\r\n \t
        16. c. The copper tube has contracted and the Invar rod has opened the gas valve.<\/li>\r\n \t
        17. a. the coil is energized<\/li>\r\n \t
        18. a. 30 MV<\/li>\r\n \t
        19. d. 24 MV<\/li>\r\n \t
        20. b. downstream of the safety valve<\/li>\r\n \t
        21. b. inlet gas pressure and spring pressure<\/li>\r\n \t
        22. b. the pressure to the main burner<\/li>\r\n \t
        23. a. Seismic valve<\/li>\r\n \t
        24. d. Redundant gas valve<\/li>\r\n \t
        25. a. remain fully open and never close<\/li>\r\n \t
        26. b. a thermocouple<\/li>\r\n \t
        27. b. False<\/li>\r\n \t
        28. c. Snaps open to a pre-set minimum input<\/li>\r\n<\/ol>\r\n

          Competency B2<\/h1>\r\n

          Self-Test 1<\/h2>\r\n
            \r\n \t
          1. b. False<\/li>\r\n \t
          2. a. True<\/li>\r\n \t
          3. a. True<\/li>\r\n \t
          4. c. Remove the handle and tighten the packing nut<\/li>\r\n \t
          5. b. False<\/li>\r\n \t
          6. b. False<\/li>\r\n \t
          7. b. Pulls onto the fitting<\/li>\r\n<\/ol>\r\n

            Self-Test 2<\/h2>\r\n
              \r\n \t
            1. b. False<\/li>\r\n \t
            2. b. 2 psig<\/li>\r\n \t
            3. c. Lowest maximum pressure rating of any downstream components<\/li>\r\n \t
            4. b. False<\/li>\r\n \t
            5. a. True<\/li>\r\n \t
            6. b. False<\/li>\r\n \t
            7. a. True<\/li>\r\n \t
            8. d. All of the above<\/li>\r\n \t
            9. d. Use 1 inch pipe for the entire length \u2013 make the change at the vent tapping<\/li>\r\n \t
            10. a.\u00a0the regulator to \u201chunt\u201d<\/li>\r\n \t
            11. c. The vent must be piped to a safe location outdoors<\/li>\r\n \t
            12. a. A vent leak-limiting system<\/li>\r\n \t
            13. b. False<\/li>\r\n \t
            14. c. 10 ft<\/li>\r\n \t
            15. b. 3 ft<\/li>\r\n<\/ol>\r\n

              Competency B3<\/h1>\r\n

              Self-Test 1<\/h2>\r\n
                \r\n \t
              1. b. False<\/li>\r\n \t
              2. d. 50 psi for 180 minutes<\/li>\r\n \t
              3. b. False<\/li>\r\n \t
              4. b. False<\/li>\r\n \t
              5. To verify that the supply valve is closed tight<\/li>\r\n \t
              6. b. 22.28 ft3<\/sup> (801.5 L)<\/li>\r\n<\/ol>\r\n

                Self-Test 2<\/h2>\r\n
                  \r\n \t
                1. a. True<\/li>\r\n \t
                2. b. False<\/li>\r\n \t
                3. b. False<\/li>\r\n \t
                4. b. False<\/li>\r\n \t
                5. c. 2 psi<\/li>\r\n \t
                6. c. 1\" NPS<\/li>\r\n \t
                7. b. 100 ft<\/li>\r\n<\/ol>\r\n

                  Competency B4<\/h1>\r\n

                  Self-Test 1<\/h2>\r\n
                    \r\n \t
                  1. b. Exfiltration<\/li>\r\n \t
                  2. a. True<\/li>\r\n \t
                  3. b. 5 Pa (.02\u201d wc)<\/li>\r\n \t
                  4. b. Direct vent and room air systems<\/li>\r\n \t
                  5. b. False<\/li>\r\n<\/ol>\r\n

                    Self-Test 2<\/h2>\r\n
                      \r\n \t
                    1. d. Manufacturer\u2019s literature<\/li>\r\n \t
                    2. c. 9 in.2<\/sup><\/li>\r\n \t
                    3. c. \u00bd\"<\/li>\r\n \t
                    4. c. Loose building of sufficient volume<\/li>\r\n \t
                    5. b. 10% or 10 in.2<\/sup><\/li>\r\n \t
                    6. d. 47 in.2<\/sup><\/li>\r\n \t
                    7. b. 9 in.2<\/sup><\/li>\r\n \t
                    8. d. 35000<\/span> mm2<\/sup><\/li>\r\n \t
                    9. b. 14 in.2<\/sup><\/li>\r\n \t
                    10. c. 32 in.2<\/sup><\/li>\r\n \t
                    11. None required<\/li>\r\n \t
                    12. b. 260 in.2<\/sup> upper and lower<\/li>\r\n \t
                    13. c. 201 in.2<\/sup><\/li>\r\n \t
                    14. b. 10 in.2<\/sup><\/li>\r\n \t
                    15. c. 310000 mm2<\/sup><\/span><\/li>\r\n \t
                    16. b. 67 in.2<\/sup><\/li>\r\n \t
                    17. d. 240 in.2<\/sup><\/li>\r\n \t
                    18. c. 12250<\/span> mm2<\/sup><\/li>\r\n<\/ol>\r\n

                      Self-Test 3<\/h2>\r\n
                        \r\n \t
                      1. b. False<\/li>\r\n \t
                      2. c. 24 in.<\/li>\r\n \t
                      3. b. 12 in.<\/li>\r\n \t
                      4. d. 36 in.<\/li>\r\n \t
                      5. b. False<\/li>\r\n \t
                      6. d. 50 ft<\/li>\r\n \t
                      7. b. False<\/li>\r\n \t
                      8. a. True<\/li>\r\n \t
                      9. b. 12 in.<\/li>\r\n<\/ol>","rendered":"

                        Competency B1<\/h1>\n

                        Self-Test 1<\/h2>\n
                          \n
                        1. b. False<\/li>\n
                        2. a. True<\/li>\n
                        3. b. False<\/li>\n
                        4. c.\u00a0125 psig<\/li>\n
                        5. a. True<\/li>\n
                        6. b. False<\/li>\n
                        7. b. False<\/li>\n
                        8. d. Any of the choices<\/li>\n<\/ol>\n

                          Self-Test 2<\/h2>\n
                            \n
                          1. b.\u00a0Upstream of the automatic gas valve<\/li>\n
                          2. b. False<\/li>\n
                          3. c.\u00a0CSA B149.3<\/li>\n
                          4. c. 100% safe<\/li>\n
                          5. b. False<\/li>\n<\/ol>\n

                            Self-Test 3<\/h2>\n
                              \n
                            1. b. Valve disc<\/li>\n
                            2. c. Diaphragm<\/li>\n
                            3. a. Spring<\/li>\n
                            4. c. To maintain a constant gas pressure at the gas valve inlet<\/li>\n
                            5. c. The outlet pressure under the diaphragm<\/li>\n
                            6. d. The adjustable spring above the diaphragm<\/li>\n
                            7. c.\u00a0The adjusting screw is screwed down<\/li>\n
                            8. c.\u00a0Allow the regulator to breath<\/li>\n
                            9. d. Opening force of the spring is equal to the closing force of the downstream pressure<\/li>\n
                            10. c. Droop<\/li>\n
                            11. b. The regulator will close completely<\/li>\n
                            12. d. Keep downstream pressure closer to set point during flow conditions<\/li>\n
                            13. a. Provide mechanical advantage for positive shut-off<\/li>\n
                            14. b. It decreases<\/li>\n
                            15. a. Service regulators<\/li>\n
                            16. d. Regulator to respond slow or sluggish<\/li>\n
                            17. a. The pressure downstream of a regulator under no flow conditions<\/li>\n
                            18. c.\u00a02 psig<\/li>\n
                            19. a.\u00a0Two stage regulation<\/li>\n
                            20. c. First stage 5 psig, Second stage 2 psig<\/li>\n
                            21. d. MBH<\/li>\n
                            22. a. remain permanently open<\/li>\n
                            23. d. to keep downstream pressure closer to set point during flow conditions.<\/li>\n
                            24. b. Normally closed<\/li>\n<\/ol>\n

                              Self-Test 4<\/h2>\n
                                \n
                              1. c. Thermal expansion of solids<\/li>\n
                              2. d. Thermal expansion of liquids<\/li>\n
                              3. a. Electro-magnetism<\/li>\n
                              4. c. Thermocouple<\/li>\n
                              5. d. Gas water heater<\/li>\n
                              6. c. To open or close the valve seat faster<\/li>\n
                              7. a. True<\/li>\n
                              8. c. Appliance regulator<\/li>\n
                              9. b. ECO<\/li>\n
                              10. d. A second automatic shutoff valve seat<\/li>\n
                              11. c. Electric Stepper motor<\/li>\n
                              12. a. True<\/li>\n
                              13. b. False<\/li>\n
                              14. b. False<\/li>\n
                              15. b. Low Fire 1 \u2013 1.5 in.WC, High Fire 3 \u2013 4 in. WC.<\/li>\n
                              16. c. The copper tube has contracted and the Invar rod has opened the gas valve.<\/li>\n
                              17. a. the coil is energized<\/li>\n
                              18. a. 30 MV<\/li>\n
                              19. d. 24 MV<\/li>\n
                              20. b. downstream of the safety valve<\/li>\n
                              21. b. inlet gas pressure and spring pressure<\/li>\n
                              22. b. the pressure to the main burner<\/li>\n
                              23. a. Seismic valve<\/li>\n
                              24. d. Redundant gas valve<\/li>\n
                              25. a. remain fully open and never close<\/li>\n
                              26. b. a thermocouple<\/li>\n
                              27. b. False<\/li>\n
                              28. c. Snaps open to a pre-set minimum input<\/li>\n<\/ol>\n

                                Competency B2<\/h1>\n

                                Self-Test 1<\/h2>\n
                                  \n
                                1. b. False<\/li>\n
                                2. a. True<\/li>\n
                                3. a. True<\/li>\n
                                4. c. Remove the handle and tighten the packing nut<\/li>\n
                                5. b. False<\/li>\n
                                6. b. False<\/li>\n
                                7. b. Pulls onto the fitting<\/li>\n<\/ol>\n

                                  Self-Test 2<\/h2>\n
                                    \n
                                  1. b. False<\/li>\n
                                  2. b. 2 psig<\/li>\n
                                  3. c. Lowest maximum pressure rating of any downstream components<\/li>\n
                                  4. b. False<\/li>\n
                                  5. a. True<\/li>\n
                                  6. b. False<\/li>\n
                                  7. a. True<\/li>\n
                                  8. d. All of the above<\/li>\n
                                  9. d. Use 1 inch pipe for the entire length \u2013 make the change at the vent tapping<\/li>\n
                                  10. a.\u00a0the regulator to \u201chunt\u201d<\/li>\n
                                  11. c. The vent must be piped to a safe location outdoors<\/li>\n
                                  12. a. A vent leak-limiting system<\/li>\n
                                  13. b. False<\/li>\n
                                  14. c. 10 ft<\/li>\n
                                  15. b. 3 ft<\/li>\n<\/ol>\n

                                    Competency B3<\/h1>\n

                                    Self-Test 1<\/h2>\n
                                      \n
                                    1. b. False<\/li>\n
                                    2. d. 50 psi for 180 minutes<\/li>\n
                                    3. b. False<\/li>\n
                                    4. b. False<\/li>\n
                                    5. To verify that the supply valve is closed tight<\/li>\n
                                    6. b. 22.28 ft3<\/sup> (801.5 L)<\/li>\n<\/ol>\n

                                      Self-Test 2<\/h2>\n
                                        \n
                                      1. a. True<\/li>\n
                                      2. b. False<\/li>\n
                                      3. b. False<\/li>\n
                                      4. b. False<\/li>\n
                                      5. c. 2 psi<\/li>\n
                                      6. c. 1″ NPS<\/li>\n
                                      7. b. 100 ft<\/li>\n<\/ol>\n

                                        Competency B4<\/h1>\n

                                        Self-Test 1<\/h2>\n
                                          \n
                                        1. b. Exfiltration<\/li>\n
                                        2. a. True<\/li>\n
                                        3. b. 5 Pa (.02\u201d wc)<\/li>\n
                                        4. b. Direct vent and room air systems<\/li>\n
                                        5. b. False<\/li>\n<\/ol>\n

                                          Self-Test 2<\/h2>\n
                                            \n
                                          1. d. Manufacturer\u2019s literature<\/li>\n
                                          2. c. 9 in.2<\/sup><\/li>\n
                                          3. c. \u00bd”<\/li>\n
                                          4. c. Loose building of sufficient volume<\/li>\n
                                          5. b. 10% or 10 in.2<\/sup><\/li>\n
                                          6. d. 47 in.2<\/sup><\/li>\n
                                          7. b. 9 in.2<\/sup><\/li>\n
                                          8. d. 35000<\/span> mm2<\/sup><\/li>\n
                                          9. b. 14 in.2<\/sup><\/li>\n
                                          10. c. 32 in.2<\/sup><\/li>\n
                                          11. None required<\/li>\n
                                          12. b. 260 in.2<\/sup> upper and lower<\/li>\n
                                          13. c. 201 in.2<\/sup><\/li>\n
                                          14. b. 10 in.2<\/sup><\/li>\n
                                          15. c. 310000 mm2<\/sup><\/span><\/li>\n
                                          16. b. 67 in.2<\/sup><\/li>\n
                                          17. d. 240 in.2<\/sup><\/li>\n
                                          18. c. 12250<\/span> mm2<\/sup><\/li>\n<\/ol>\n

                                            Self-Test 3<\/h2>\n
                                              \n
                                            1. b. False<\/li>\n
                                            2. c. 24 in.<\/li>\n
                                            3. b. 12 in.<\/li>\n
                                            4. d. 36 in.<\/li>\n
                                            5. b. False<\/li>\n
                                            6. d. 50 ft<\/li>\n
                                            7. b. False<\/li>\n
                                            8. a. True<\/li>\n
                                            9. b. 12 in.<\/li>\n<\/ol>\n","protected":false},"author":90,"menu_order":2,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"back-matter-type":[28],"contributor":[],"license":[],"class_list":["post-6","back-matter","type-back-matter","status-publish","hentry","back-matter-type-appendix"],"_links":{"self":[{"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/pressbooks\/v2\/back-matter\/6","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/pressbooks\/v2\/back-matter"}],"about":[{"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/wp\/v2\/types\/back-matter"}],"author":[{"embeddable":true,"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/wp\/v2\/users\/90"}],"version-history":[{"count":23,"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/pressbooks\/v2\/back-matter\/6\/revisions"}],"predecessor-version":[{"id":503,"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/pressbooks\/v2\/back-matter\/6\/revisions\/503"}],"metadata":[{"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/pressbooks\/v2\/back-matter\/6\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/wp\/v2\/media?parent=6"}],"wp:term":[{"taxonomy":"back-matter-type","embeddable":true,"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/pressbooks\/v2\/back-matter-type?post=6"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/wp\/v2\/contributor?post=6"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/opentextbc.ca\/plumbing4b\/wp-json\/wp\/v2\/license?post=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}