The stack switch or stack relay ____.
A. starts the fan motor when the thermostat calls for heat
B. shuts down the burner if it does not sense heat in the flue products
C. cuts off the ignition after the flame has been established
D. all of the above
Answer: B
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Which of the following is true of waste heat boilers?
A. They improve efficiency. B. They cost more money. C. They require specialized training. D. They required additional personnel.
Filing an informal report immediately after an accident occurs is important for all of the following reasons except that it _____.
a. allows support staff to provide instructions and clerical assistance b. permits support staff to deal with the employee’s injuries c. provides further evidence of an employee wrongdoing d. alerts the company that an accident with injury has occurred
After checking any control circuit fuses or breakers when troubleshooting heat pump wiring, which of the following should be checked?
a. Terminations and wire nuts b. Primary voltage at the transformer c. Wire sizes d. Secondary voltage at the transformer
With the two-point perspective method, all lines that would have been horizontal in an elevation merge at a single vanishing point on the horizon line.
Answer the following statement true (T) or false (F)