What is the purpose of the limit switch?
A) It improves efficiency by limiting furnace run time
B) It limits the indoor blower fan speed to supply a regulated supply of warm air
C) It prevents overheating by interrupting the circuit to the gas valve
D) It improves efficiency by limiting the supply air temperature
C
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A tack weld added to the center of a lap joint prevents ____________________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is a non-verbal communication?
A) Posture B) Tone of voice C) Hand gestures D) All of the above
Technician A says that an analog scope can store the waveform for viewing later. Technician B says that the trigger level has to be set on most scopes to be able to view a changing waveform. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
What is meant by drift?
What will be an ideal response?