Technician "A" says that if the air filter on an air-conditioning system is totally blocked with dirt, the amperage draw of the evaporator fan motor will go down. Technician "B" says that if you close down one supply register on a duct system, the volume of air feeding the other locations will increase slightly. Which of the following statements is correct?
A. Technician "A" is correct. Technician "B" is correct.
B. Technician "A" is correct. Technician "B" is incorrect.
C. Technician "A" is incorrect. Technician "B" is correct.
D. Technician "A" is incorrect. Technician "B" is incorrect.
Answer: A
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How many phase rule variables must be specified to fix the thermodynamic state of each of the following systems?
(a) A sealed flask containing a liquid ethanol-water mixture in equilibrium with its vapor. (b) A sealed flask containing a liquid ethanol-water mixture in equilibrium with its vapor and nitrogen. (c) A sealed flask containing ethanol, toluene, and water as two liquid phases plus vapor.
Piping systems marked with a yellow color-code belong to Class _____.
a. F b. D c. S d. P
Most of the animals produced in this country are raised for producing dairy
products.
Indicate whether the statement is true or false.What is a perfect vacuum?
What will be an ideal response?