The highest AFUE-rated oil furnace that a technician is likely to encounter is _____.

a. 78 percent
b. 80 percent
c. 86.5 percent
d. 95 percent


c. 86.5 percent

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Which of the following actions will not add strain to your back when lifting?

a. holding an object close to your body b. twisting while lifting c. holding an object away from your body d. lifting with back muscles rather than leg muscles

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When there is no current draw and the starter does not rotate, the cause could be

A. open field windings B. open armature coils C. broken brushes or springs D. All of the above

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When using a fire extinguisher, what word can be used to remember what to do?

A) FIRE B) RED C) PASS D) LEVER

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Compression nut, a compression sleeve, and a ferrule comprise which of the following?

A) Compression joint B) Sweat reducing coupling C) Flare joint D) Sweat ells

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