Lightning conductors should provide at least ____ paths for current flow from an air terminal to Earth.
A. two
B. three
C. four
D. five
Answer: A
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When tightening flange bolts, only tighten the bolts _____ percent at a time.
a. 10 b. 25 c. 30 d. 50
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On an air-cooled semi-hermetic compressor the most likely cause of piston wear allowing “blowby” of vapor into the crankcase is __________.
a. Slugging b. Flooding c. Starving d. Flooded start
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There are two types of compression fittings: the ____ fitting and the barrel compression fitting.
A. sweated B. soldered C. flared D. crimped
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How many board feet are there in (40) 2" × 4" × 12' studs?