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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: Fusible plugs shall not be used with pressure vessels of<\/h3>3 cubic feet or more<\/li>15 square feet or less<\/li>15 cubic feet or more<\/li>3 cubic feet or less<\/li><\/ul>2: What happens to copper joints when overheated?<\/h3>nothing<\/li>joint becomes oxidized and ditorted<\/li>copper becomes harder<\/li>none of the above<\/li><\/ul>3: The two basic types of evaporators are <\/h3>direct expansion and plate<\/li>flooded and direct expansion<\/li>finned and plate<\/li>prime surface and finned<\/li><\/ul>4: A high side float is a<\/h3>float type valve that controls the crankcase oil level<\/li>float type switch that stops the compressor when the pressure on the high side becomes too high<\/li>float type valve that controls the amount of refrigerant stored in the receiver<\/li>metering device used on critically charged systems that controls the level of the liquid refrigerant in the high pressure side of the system.<\/li><\/ul>5: Pressure vessels nameplate markings must be compliant with the<\/h3>ASHRAE 34 Standards<\/li>CMR-588 & CMR-528<\/li>ASME Boiler and Pressure Vessel Code<\/li>All of the Above<\/li><\/ul>6: How does a centrifugal compressor create the pressure differential needed to move refrigerant through the system?<\/h3>Suction and discharge valves<\/li>Nesting scrolls<\/li>Rotating vanes<\/li>Fan-like action <\/li><\/ul>7: A 24 volt transformer with a 240 volt primary can handle how many amps?<\/h3>10 amps<\/li>24 amps<\/li>There isn't enough information to answer.<\/li>20 amps<\/li><\/ul>8: A chilled water pump suction gauge reads 10 psig. Discharge gauge reads 48 psig. The head in feet of the pump is working against<\/h3>38<\/li>88<\/li>116<\/li>108<\/li><\/ul>9: The principle used in continuous type absorption systems is<\/h3>Ohm's Law<\/li>Boyle's Law<\/li>Dalton's Law<\/li>Charles's Law<\/li><\/ul>10: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.<\/h3>the atmosphere<\/li>a de-pressurized recovery tank with a silver top and yellow bottom<\/li>a tank containing two pounds of a water\/lithium bromide mix for every pound of ammonia<\/li>All of the above<\/li><\/ul>11: Which oil is hydoscopic?<\/h3>mineral<\/li>animal<\/li>polyolester<\/li>SW30<\/li><\/ul>12: Two systems using separate refrigerants that are superimposed upon one another is called<\/h3>cascade<\/li>single stage<\/li>booster<\/li>indirect<\/li><\/ul>13: How many groups of refrigerants are there?<\/h3>1<\/li>7<\/li>5<\/li>3<\/li><\/ul>14: What is Absolute Zero?<\/h3>-400F<\/li>-460F<\/li>-773F<\/li>-640F<\/li><\/ul>15: One watt of electrical energy in a resistive heater will provide _____ BTU\/hr<\/h3>34.15<\/li>3.415<\/li>6.830<\/li>16.64<\/li><\/ul>16: What is absolute humidity?<\/h3>the amount of moisture in the air per one pound of 50% RH air<\/li>the amount of moisture in the air in grains of cubic feet of volume<\/li>the amount of moisture in the air in grains of square feet of volume<\/li>none of the above<\/li><\/ul>17: Trichlorofluoromethane is the name of what refrigerant?<\/h3>R-12<\/li>R-113<\/li>R-502<\/li>R-11<\/li><\/ul>18: To determine the pump size needed for an open cooling tower system, the following must be known,<\/h3>GPM and friction head<\/li>GPM and unbalanced head and friction head<\/li>GPM and balanced head and friction head<\/li>GPM, pipe size, and equivalent head. <\/li><\/ul>19: A water regulating valve opens when<\/h3>when the power is on there is an overcharge of refrigerant<\/li>the compressor is on<\/li>the head pressure rises<\/li>when the power is on<\/li><\/ul>20: What device should be used on low-temperature freezers?<\/h3>oil separator<\/li>hot-gas by-pass<\/li>discharge muffler<\/li>high capacity TXV<\/li><\/ul>21: At higher altitudes, the boiling point of refrigerant is<\/h3>the same<\/li>higher<\/li>lower<\/li>equal to the coefficient of water at 32F<\/li><\/ul>22: Horizontal piping should be run level.<\/h3>False<\/li>Yes, if the condenser is located above the evaporator<\/li>True<\/li>No, unless the supervisor on the job says so.<\/li><\/ul>23: In a motor, an internal overload might open if<\/h3>there's an excess current draw through the motor<\/li>there was a high pressure refrigerant was used for a low pressure system.<\/li>there's an open start winding<\/li>there's a direct short<\/li><\/ul>24: The outer portion of shell of the compressor used on low-pressure chillers is called the<\/h3>nozzle<\/li>baffle<\/li>suction<\/li>volute<\/li><\/ul>25: The difference between saturated liquid and saturated vapor is<\/h3>pressure<\/li>volume<\/li>temperature<\/li>heat<\/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}]}}