An oscilloscope is a type of voltmeter that displays voltage over time graphically with a trace.
Answer the following statement true (T) or false (F)
True
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The thermostat for room units is usually mounted with the control knob in the control center and the remote bulb in the vicinity of the return air.
Answer the following statement true (T) or false (F)
An electric heating unit that utilizes ductwork to distribute the heated air is classified as a ____.
A. natural-convection heater B. forced-convection heater C. forced-draft conductor D. radiant heater
What causes the little pops and ticking that can be heard in some furnaces before the blower comes on?
A) Small quantities of water in the gas B) Mechanical rattles from an unbalanced indoor blower C) Expansion of the heat exchanger as it heats up D) Small concentrated pockets of gas that explode
The best way to remove a pop rivet is:
A) Unscrewing it. B) A cutting torch. C) Drilling it out. D) A hammer and chisel.