A _____ is an interruption of the typical structure of a material.?
?
A. discontinuity?
B. defect?
C. stress riser?
D. groove?
Answer: A
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What are the advantages and disadvantages of controlling output with small relays?
What will be an ideal response?
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A transformer-supplied system operating at less than 50V must be grounded if the supply voltage to the transformer exceeds _____.
a. 24V b. 50V c. 120V d. 150V
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The reference line is always drawn ____ to the bottom edge of the drawing.
A. perpendicular B. parallel C. at a 30 degree angle D. at a 45 degree angle
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The worm gear produces more heat because:
A. Has higher gear ratios. B. It is difficult to lubricate. C. It is usually mounted close to a motor. D. The gears slide against each other.
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