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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: Brazed joints melt at temperatures above<\/h3>1,000F<\/li>800F<\/li>1,200F<\/li>500F<\/li><\/ul>2: The solution that leaves the concentrator in an absorption chiller is referred to as the <\/h3>weak solution<\/li>diluted solution <\/li>absorbed solution<\/li>strong solution <\/li><\/ul>3: Ammonia systems use ____ pressure to adjust oil pressure<\/h3>air<\/li>discharge<\/li>liquid<\/li>stream<\/li><\/ul>4: In an air conditioning system, the unit of total heat energy content in an air\/vapor mixture is<\/h3>Enthalpy<\/li>Latent heat<\/li>Specific heat<\/li>Sensible heat<\/li><\/ul>5: What is specific heat?<\/h3>measured heat<\/li>heat required to raise the temperature of 1lb of a substance 1 degree<\/li>the specific heat required to change the state of one cubic foot of air to steam<\/li>none of the above<\/li><\/ul>6: Pressure vessels with an internal volume of 10 cubic feet or more<\/h3>shall use rupture discs or duel pressure relief valves<\/li>shall use fusible plugs<\/li>shall use pressure relief devices or fusible plugs<\/li>shall use pressure relief devices<\/li><\/ul>7: What is the minimum size of the discharge pipe?<\/h3>Same size as the outlet of the relief valve<\/li>One pipe size larger that the inlet of the relief valve<\/li>Depends on size of manifold<\/li>All of the above<\/li><\/ul>8: A professional or office building would be considered what type of occupancy?<\/h3>business<\/li>commercial<\/li>public assembly<\/li>mercantile<\/li><\/ul>9: High side floats are used on centrifugal chiller systems are are considered critically charged systems.<\/h3>are obsolete.<\/li>True<\/li>depends on the type of refrigerant being used<\/li>False<\/li><\/ul>10: The External equalizer of a TXV compensates for<\/h3>pressure drop across the condenser coil<\/li>pressure within the system<\/li>pressure drop across the evaporator coil<\/li>pressure within the evaporator<\/li><\/ul>11: What type of fuses must be used on a HVAC system?<\/h3>TR Type, Duel Element, Time Delay<\/li>Fast blow<\/li>10% lower than RLA<\/li>none of the above<\/li><\/ul>12: When an inspection is needed, how often must it be done?<\/h3>every 24 months<\/li>annually<\/li>every 18 months<\/li>every 36 months<\/li><\/ul>13: Pressure vessels with an internal volume of 3 cubic feet or less<\/h3>shall use pressure relief devices or fusible plugs<\/li>do not need pressure relief protection<\/li>shall use fusible plugs<\/li>shall use pressure relief devices<\/li><\/ul>14: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants<\/h3>there is no Group B1 refrigerants<\/li>higher<\/li>the same<\/li>lower<\/li><\/ul>15: How is bring measured?<\/h3>manometer<\/li>hydrometer<\/li>hygrometer<\/li>anemometer<\/li><\/ul>16: What is the voltage of each leg to ground of a three-phase motor with a 460v supply voltage?<\/h3>240v<\/li>208v<\/li>120v<\/li>277v<\/li><\/ul>17: Low pressure systems have what kind of compressor?<\/h3>Centrifugal<\/li>Reciprocating<\/li>Scroll<\/li>Rotary<\/li><\/ul>18: What type of material can't be used on the outlet of a relief valve?<\/h3>PVC<\/li>Copper<\/li>Stainless steel<\/li>Magnesium alloy<\/li><\/ul>19: Low temperature systems should have what?<\/h3>High pour point<\/li>Low pour point<\/li>High viscosity<\/li>None of the above<\/li><\/ul>20: Name a reason that does not cause reduced condenser air quantity<\/h3>Dirty fan blades<\/li>Dirty Coil<\/li>High ambient temperature<\/li>Prevailing winds<\/li><\/ul>21: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?<\/h3>R-22<\/li>R-11<\/li>R-113<\/li>R-12<\/li><\/ul>22: The evaporator is a device to<\/h3>store liquid refrigerant<\/li>Keep the compressor busy <\/li>absorb heat into the refrigeration system<\/li>remove heat from the refrigeration system <\/li><\/ul>23: How many BTU's is produced by one watt of energy<\/h3>1<\/li>3.00<\/li>2.57<\/li>3.41<\/li><\/ul>24: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.<\/h3>shall be prohibited<\/li>of Group B2 refrigerant shall be prohibited<\/li>containing R-11, R-123 & R-717 exclusively shall not be prohibited<\/li>shall not be prohibited<\/li><\/ul>25: What pipe can not be used for refrigeration?<\/h3>K<\/li>L<\/li>N<\/li>M<\/li><\/ul><\/div><\/form>\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}]}}