True/False
Indicate whether the
statement is true or false.
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1.
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Refrigeration systems have 4 main components
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2.
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Refrigeration systems have 3 lines
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3.
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The compressor turns low pressure gas into high pressure gas
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4.
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The condenser turns high pressure gas into high pressure liquid
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5.
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The evaporator turn hiqh pressure liquid into low pressure gas
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6.
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A water fountain uses a water cooled evaporator
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7.
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The process of recovering heat from a condenser using water cooled
condenser is called heat reclamation:
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8.
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An absorption refrigerator does not have a compressor
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9.
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ACCA Manual J is used for load calculation
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10.
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A technician should develop a sequence for installation
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11.
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The success of any installation lies in planning
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12.
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Part of the success in installation requires the technician checking the
manufacturer installation guidelines
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13.
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Before installing refrigerant lines make sure that the indoor metering device is
the correct one for the application
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14.
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The maximum pipe length should not exceed 175 feet
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15.
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A standing pressure check is normally use for refrigerant leaks
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16.
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After the system is tested for leaks a vacuum @ 500 microns should be
done
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17.
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An HVACR Contractor has to be sure that the overcurrent protectio device is the
correct one for the outdoor unit
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18.
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There should be around 400 CFM per ton of airflow for the evaporator
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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19.
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According to the second law of
thermodynamics, how does heat travel?
a. | Heat energy does not travel from one
object to another. | b. | Heat energy travels to and from warmer
objects. | c. | Heat energy travels from a cooler body to a warmer
body. | d. | Heat energy travels from a warmer body to a cooler
body. |
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20.
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A metal rod is heated on one
end and heat travels from that end to the cooler end through the rod. This is an example
of:
a. | Conduction. | b. | Radiation. | c. | Convection. | d. |
Sublimation. |
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21.
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Campers being heated by a fire
outside is an example of:
a. | Sublimation. | b. | Radiation. | c. | Conduction. | d. | Convection. |
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22.
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3.- The line between the condenser and the metering device is called:
a. | Liquid | b. | Suction | c. | Discharge |
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23.
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4.- The line between the evaporator and the compressor is called:
a. | Liquid | b. | Suction | c. | Discharge |
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24.
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A compressor with pistons is called:
a. | Reciprocating | b. | Screw | c. | Scroll | d. | Thermoelectric |
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25.
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10.- A type of modulating metering device is called:
a. | Thermo expasion valve | b. | Capillary Tube | c. | Fixed
orifice |
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