Various electrical switches used in A/C systems ________.
A) Protect the compressor
B) Control fan motors
C) Prevent evaporator icing
D) All of the above
D) All of the above
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A(n) ____ has very little hands on experience with engines.
a. general technician b. entry-level technician c. certified technician d. apprentice technician
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A RTD is used to measure:
a. pressure b. flow c. level d. temperature
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How does the mechanical flapper work?
What will be an ideal response?
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Why are draft inducer fans necessary in today's furnaces?
A) To separate the flue gas from the heat through centrifugal force B) To move the flue gases through the ductwork C) The flue gases cannot make their way through the new heat exchangers on their own. D) To move gas into the burner assembly
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