If the speed of a blower used to move air through a duct is decreased, the horsepower requirement of the
motor _____.
a. is increased
b. remains the same
c. is decreased
d. is modulated
c
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How can you determine the wire size that can be used effectively with an insulated barrel crimp connector?
a. It is the same as the bolt or screw size permitted. b. It is indicated by the color-coding of the insulation on the connector. c. It is referenced by catalog number. d. It is the largest size of wire you can fit into the barrel.
What is the name of the device, either analog or digital, that measures the activities of invisible
electrons and provides a visual interpretation of these activities?
a. photoconductive cell c. potentiometer or pot b. rheostat d. electrical meter
Which sensor might use an aspirator tube?
A) Discharge air temperature B) Evaporator outlet temperature C) Outside air temperature D) Inside vehicle temperature
Once acid is created within the refrigeration system:
A) Dry nitrogen must be used to reverse the increase in system high-side pressure caused by the acid. B) It can cause a burnout when the refrigerant is exposed to the compressor motor. C) Only a multiple evacuation procedure can be used to evacuate the refrigeration system. D) It becomes impossible to remove brazing oxides and metal particles from the system, even if a filter drier is used.