When troubleshooting an air-to-air heat pump, the technician notices that the outdoor fan motor is not operating, but the compressor is operating during a call for heat. What is the most likely problem?
A. defective room thermostat
B. defective defrost fan control
C. defective reversing valve
D. defective outdoor contactor
Answer: B
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Which of the following can be used to find the presence of power, open switches, defective capacitors, broken wires, or blown fuses?
a. ohmmeter b. voltmeter c. ammeter d. thermocouple
In a multistory building, shelf angles are typically used at
A) at the foundation level. B) each floor level. C) each floor level and at mid-height between floors. D) all of the above. E) A and C.
Landscaping is a service industry, not a manufacturing industry; therefore it is important to enjoy working with and for others
Indicate whether the statement is true or false
Which of the following configurations of batteries would result in the voltage potential of a battery being subtracted from the system?
A. A parallel setup where the positives are hooked together and the negatives are hooked together B. A series setup where the positive of one battery is hooked to the negative of the next battery C. A combination setup made up of multiple cells in series, connected in a parallel fashion to provide power to the system D. A series setup where the positive of one battery is hooked to the positive of the next battery