During the heating season, the vapor pressure of the inside air in a typical dwelling in the northern United States is
A) lower than the outside air.
B) the same as the outside air.
C) greater than the outside air.
C) greater than the outside air.
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Technician A says that fuel cells are categorized according to the type of electrolyte used. Technician B says that all fuel cells operate most efficiently at 500°F. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
In a RL circuit, the inductive reactance is:
A) increases as the frequency increases. B) directly proportional to the inductance. C) directly proportional to the frequency. D) all of these.
A primary advantage of using J-K flip-flops in asynchronous counter circuits is their ability to:
A) toggle on the clock if the J-K inputs are held HIGH. B) toggle on the clock if the J-K inputs are held LOW. C) toggle on the clock if the PRESET and CLEAR inputs are held HIGH. D) toggle on the clock if the PRESET and CLEAR inputs are held LOW.
The indoor dry bulb temperature for AHRI rating condition "A" is:
A) 65°F. B) 80°F. C) 75°F. D) 67°F.