What is the purpose of the labyrinth seal (drum groove) used on a drum brake?
A) Reduces noise B) Keeps water out of the drum
C) Allows the shoes to collect dust D) Reduces cooling
B
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What is the relationship between the rotor bars of a squirrel-cage motor and the starting current?
What will be an ideal response?
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The three coordinate axes are typically represented as oblique or ____________________, depending on the preferences of the person making the sketch.
Fill in the blank(s) with the appropriate word(s).
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About 90 percent of perishable food is transported by:
a. plane c. railroad b. truck d. ship
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What are the three structural members involved in post-and-beam construction?
A. Posts, beams, and planks B. Girders, joists, and planks C. Posts, joists, and rafters D. Girders, beams, and rafters
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