What is the AHRI "A" performance testing condition for air-cooled air-conditioning equipment?
A) 95°F outside ambient, 75°F indoor dry bulb, 75°F indoor wet bulb
B) 95°F outside ambient, 80°F indoor dry bulb, 67°F indoor wet bulb
C) 100°F outside ambient, 75°F indoor dry bulb, 72°F indoor wet bulb
D) 90°F outside ambient, 85°F indoor dry bulb, 70°F indoor wet bulb
B
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What is the numeric value for this expression: (?Y/?Y)_Z [2(?Z/?Z)_(Y,X)+(?X/?Y)_X/3]^(-1)?
A. 0.43 B. 0.5 C. 0 D. 1 E. 2
Twice the product of two numbers is 418 and one-half their difference is 4. What are the numbers?
Fill in the blank(s) with the appropriate word(s).
Compared with the speed for drilling the same material, the speed for reaming is ________ that for drilling
A) One-half B) Higher than C) Equal D) One-fourth
What denotes the maximum voltage a diode can withstand when reverse-biased?
A) Peak inverse voltage B) Peak forward-bias voltage C) Reverse breakdown D) Reverse bias