Which refrigerant used in residential air conditioning has operating pressures that are about 40% to 70% higher than that of R-22?
A. R-22
B. R-410A
C. R-134a
D. R-12
Answer: B
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The civil engineer’s 20 scale is often used in mechanical drafting as a , decimal-inch scale.
a. full b. half c. quarter d. double
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One cycle occurs when the rotor, or conductor, cuts the magnetic field of a north pole and south pole.
Answer the following statement true (T) or false (F)
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Why is "inches of water column" used to measure gas pressure instead of psig?
What will be an ideal response?
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Multiply the following fractions and reduce to lowest terms: 2 1/8 x 4 1/2 =
Fill in the blank(s) with the appropriate word(s).
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