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Quiz Result Settings<\/p>\n \n Check this if you want to display JUST the wrong answers<\/label>\n \n <\/div>\n <\/div>1: Absolute pressure is<\/h3>Gauge Pressure<\/li>Atmospheric Pressure<\/li>Gauge + Atmospheric Pressure + Pi<\/li>none of the above<\/li><\/ul>2: Pressure vessels with an internal volume of 10 cubic feet or more<\/h3>shall use pressure relief devices<\/li>shall use pressure relief devices or fusible plugs<\/li>shall use fusible plugs<\/li>shall use rupture discs or duel pressure relief valves<\/li><\/ul>3: What type of material can't be used on the outlet of a relief valve?<\/h3>PVC<\/li>Magnesium alloy<\/li>Stainless steel<\/li>Copper<\/li><\/ul>4: What device removes the start winding from the circuit of a split-phase motor once the motor reaches 75% of its rated load amps (RLA)?<\/h3>centrifugal switch<\/li>duel-voltage switch<\/li>motor starter<\/li>printed circuit board (PCB)<\/li><\/ul>5: A moisture indicator must<\/h3>be sight side up <\/li>change color when exposed to moisture<\/li>be filled with liquid<\/li>be yellow<\/li><\/ul>6: Two capacitors are wired in parallel. One capacitor has a value of 15uf. The other has a value of 25uf. What is the total value supplied?<\/h3>15 uf<\/li>20 uf<\/li>25 uf<\/li>40 uf<\/li><\/ul>7: A split-phase motor has a ______ winding and a ____ winding<\/h3>run, start<\/li>run, common<\/li>start, common<\/li>duel-run, duel-start<\/li><\/ul>8: What happens after your initial inspection of a pressure vessel?<\/h3>Inspector leaves a metal tag with a certification listed on it<\/li>Notify the AHJ to let them know that the system been inspected<\/li>Notify the Fire Marshal that the system has been inspected and approved<\/li>There is a temporary shut-down until a final inspection can be performed.<\/li><\/ul>9: Foaming of oil in a compressor is most likely to occur<\/h3>when there is insufficient air across the condenser(i.e., dirty coil)<\/li>when the evaporator temperatures are below 32F<\/li>at start-up<\/li>when ambient temperature are low<\/li><\/ul>10: Which is the lowest vacuum?<\/h3>5" hg<\/li>10 psia<\/li>1,000 Microns<\/li>5 psig<\/li><\/ul>11: What refrigerant doesn't have to be classified?<\/h3>R-717<\/li>R-422A<\/li>R-134A<\/li>R-718<\/li><\/ul>12: Which of the following controllers would you expect to be most sensitive to temperature changes?<\/h3>line voltage t-stat<\/li>immersion controller<\/li>low voltage t-stat<\/li>aquastat<\/li><\/ul>13: What kind of system uses two different refrigerants in separate systems dependent on each other?<\/h3>R-414B<\/li>Low pressure<\/li>Cascade<\/li>Simple<\/li><\/ul>14: A compressor in which the increase in vapor pressure is attained without changing the internal volume of the compression chamber is called<\/h3>non-volumetric displacement compressor<\/li>negative displacement compressor<\/li>neutral chamber-type compressor<\/li>non-positive displacement compressor<\/li><\/ul>15: A restaurant is classified as a<\/h3>public assembly occupancy<\/li>mixed occupancy<\/li>commercial occupancy<\/li>large mercantile occupancy<\/li><\/ul>16: Three-phase motors have what type of windings?<\/h3>three start windings<\/li>one start winding and one run winding.<\/li>three run windings<\/li>three run windings and 3 start windings<\/li><\/ul>17: The critical temperature of a refrigerant gas occurs when<\/h3>any decrease in pressure will cause condensation<\/li>the gas is no longer saturated<\/li>any increase in pressure will not liquefy the gas<\/li>the gas returns to a liquid<\/li><\/ul>18: What type of relief valve is used on low pressure centrifugal compressor systems?<\/h3>Spring-loaded relief valve<\/li>Rupture disc<\/li>Purge relief<\/li>None of the above<\/li><\/ul>19: Pi equals approximately<\/h3>3.41<\/li>3.14<\/li>12,000<\/li>746<\/li><\/ul>20: One atmosphere equals<\/h3>0 psia<\/li>29.4<\/li>0 psig<\/li>14.7<\/li><\/ul>21: A check valve is a device<\/h3>designed to allow the flow of refrigerant gas in both directions<\/li>that is always spring loaded<\/li>with a pressure drop<\/li>found on high pressure steam systems<\/li><\/ul>22: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure. <\/h3>True<\/li>False<\/li><\/ul>23: There can be no airflow from an occupied space through a machine room unless what?<\/h3>System is high velocity<\/li>System is ducted and sealed<\/li>Duct is not located in the ceiling<\/li>None of the above. <\/li><\/ul>24: How many groups of refrigerants are there?<\/h3>3<\/li>1<\/li>7<\/li>5<\/li><\/ul>25: If a refrigerant leaving the condenser is 94F and the condensing temperature is 105F, the subcooling is<\/h3>9F<\/li>21F<\/li>11F<\/li>29F<\/li><\/ul><\/div><\/form><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/refrigerationpreptest.com\/index.php?rest_route=\/wp\/v2\/pages\/5","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/refrigerationpreptest.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/refrigerationpreptest.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/refrigerationpreptest.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/refrigerationpreptest.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5"}],"version-history":[{"count":9,"href":"https:\/\/refrigerationpreptest.com\/index.php?rest_route=\/wp\/v2\/pages\/5\/revisions"}],"predecessor-version":[{"id":109,"href":"https:\/\/refrigerationpreptest.com\/index.php?rest_route=\/wp\/v2\/pages\/5\/revisions\/109"}],"wp:attachment":[{"href":"https:\/\/refrigerationpreptest.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}