Why do room air conditioners ice up easier than central air-conditioning systems?
What will be an ideal response?
Room air conditioners boil the refrigerant much closer to freezing.
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The CDC has stated that diets high in saturated fat have been linked specifically with which disease?
a. coronary heart disease c. Creutzfeldt-Jacob disease b. cirrhosis d. type II diabetes
How many BTUs will a 10-kilowatt heater produce if operated for an hour?
A) 10 kw × 1 hour = 10, 000 BTUs B) (10 kw / 3410 ) × 60 = 176 BTUs C) 10 kw × 1 hour × 3410 BTUs = 34100 BTUs D) 10 kw / 3410 BTUs = 2.93 BTUs
. Which of the following means the external devices can be plugged in or unplugged at any time?
A. Open system interconnection B. Ranging C. Parity D. Hot-swappable
Why does the compression-refrigeration cycle have a high-pressure side and a low-pressure side?
A) The pressure difference is the result of polar molecular alignment due to the intense magnetic field created by the compressor motor. B) So the refrigerant can condense at a low pressure and temperature and evaporate at a high pressure and temperature C) So the refrigerant can evaporate at a low pressure and temperature and condense at a high pressure and temperature D) The pressure difference is not intentionally created, but is simply the result of circulating refrigerant with the compressor.