When is the B terminal energized on most low-voltage thermostats?
A) Whenever the thermostat calls for cooling
B) Whenever the system switch is moved to Heat
C) Whenever the system switch is moved to Cool
D) Whenever the thermostat calls for first-stage heat
[Ques. 2] Compared to the run winding, the start winding is constructed of:
A) Larger gauge wire than the run winding.
B) Higher flux density, random molecular alignment wire.
C) Smaller gauge wire than the run winding.
D) The same gauge wire as the run winding.
[Ques. 3] A visual inspection reveals a broken heating element, an open fusible link, and a cracked ceramic insulator. Which of these parts must be replaced?
A) Only the fusible links need to be replaced.
B) Only the heating element needs to be replaced.
C) Only the heating element and the fusible link need to be replaced.
D) All broken parts should be replaced.
[Ques. 4] The most effective method of checking the heating elements of an electric furnace during operation is:
A) Checking the amp draw of each heat strip. B) Checking the resistance of each heat strip.
C) Measuring the temperature of each heat strip. D) A visual inspection.
[Ques. 5] Select the characteristics of cubed ice. You may select more than one.
A) 95 percent hardness B) Cloudy C) Slower melting
D) Clear E) 70 percent hardness F) Faster melting
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