Which method is typically used to determine infiltration heat loss?
A. ?degree day method
B. ?average R-value method
C. ?balanced air equations
D. ?air change method
Answer: D
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The temperature of a refrigerant at which liquid and vapor can co-exist, for a specific pressure, is known as the point of _____.
a. saturation b. condensation c. superheat d. latency
Specialty step-down transformers are often _____.
a. used for emergency systems in healthcare facilities b. connected in series with the load c. used for small work, such as doorbells and other signaling systems d. connected to an electrical instrument, such as an ammeter, voltmeter, wattmeter, or relay
A service valve can be used to ____.
A. check the electrical service to the compressor B. isolate the refrigerant so the system can be serviced C. check the air flow across the evaporator D. check the ambient temperature at the condenser
Read the setting on this customary micrometer scale graduated in 0.001".
Fill in the blank(s) with the appropriate word(s).