Design Engineer Question:
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The toughness of a material __________ when it is heated.

A. increases
B. decreases
C. does not change


Option B

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Surface endurance limit of gear material is dependent upon its

A. elastic strength
B. yield strength
C. brinell hardness number
D. toughness
In a flange coupling, the flanges are coupled together by means of

A. bolts and nuts
B. studs
C. headless taper bolts
D. none of these