Convert 212 degrees F to Celsius.
A. 80
B. 90
C. 100
D. 110
Answer: C
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Expanding the electrical service to install a heat pump can potentially be avoided by using _____.
a. using DC-powered electric heaters b. a fossil-fuel furnace for supplemental heat c. low-voltage equipment d. fewer compressors
Which section of a service manual includes on-board diagnostic information?
A) Engine repair B) Engine performance C) Electrical systems D) None of these
When working in a confined space where concentrations of harmful substances are very high, why should atmosphere-supplying respirators be worn?
A) To circulate odorless, tasteless, invisible refrigerants B) To enable asphyxiation to occur in a very short time C) To supply clean breathing air from a compressed air source D) To purify air of harmful dust, mist, metal, fumes, and vapors
If the diode in a half-wave rectifier opens, ________
A) the output voltage would be zero B) the output voltage would not change C) the output voltage would equal the transformer secondary voltage D) the output ripple would be very small