?What tool can be used to draw a circle?
A. ?scribe
B. ?contour marker
C. ?compass
D. ?try-square
Answer: C
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Define the phrase “play the flame.”
What will be an ideal response?
Which of the following is the correct method for troubleshooting an electronic time delay?
a. Check the time delay with a stopwatch and adjust as necessary. b. Check for the presence of smoke near the furnace. c. Look for an unbalanced flame. d. Check the input and output voltage to and from the time delay.
If the ambient temperature is 80°F and the unit thermostat is set at 32°F and the box temperature is 34°F what mode of operation will the unit be in?
A. High speed heat B. Low speed heat C. High speed cool D. Low speed cool
How many sections of semiconductor materials are joined to produce a transistor?
A. one B. two C. three D. four