Dehumidification makes us feel cooler by:
A) Slowing down the process of evaporation on our skin.
B) Improving the efficiency of air-cooled condensers.
C) Speeding up the process of evaporation on our skin.
D) Actually reducing the air temperature through evaporation in the dehumidifier.
C
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Joseph built a levee averaging 1.8 feet high, 4.2 feet wide, and 4,200 feet long. He used a scraper with a capacity of 6 yards to build the levee. (Note: Yards means cubic yards.) To get the dirt, he lowered the field 4 inches with the scraper
a. How many yards of dirt are in the levee? Express your answer using scientific notation with one decimal place. b. How many yards of dirt were moved? (Note: Do not forget that the field was lowered.) c. How many trips did he make with the scraper?
Why do electronic EPRs provide better case temperatures than mechanical EPRs?
a. EEPRs are more accurate at sensing suction line pressures. b. EEPRs sense the case discharge air temperature rather than suction pressure. c. EEPRs can open and close much faster than mechanical EPRs.
Which of the following would you use for a quick and easy check of power tools?
a. ohmmeter b. voltmeter c. ammeter d. thermocouple
What is the principal difference between hot water and steam systems?
What will be an ideal response?