Design Engineer Question:
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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


Option C

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In leaf springs, the longest leaf is known as

A. lower leaf
B. master leaf
C. upper leaf
D. none of these
The toughness of a material __________ when it is heated.

A. increases
B. decreases
C. does not change