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Question
6. The pitch circle raidus rp and base circle radius rb of a gear are related by the following relationship (a = pressure angle)
Options:
A .  Rb= rp cos a (b) rb? cos a
B .  (c) rb = rp sin a (d) rb = rp tan a (e) rb= r, (tan ? a).
C .  18.224. The undercutting in case of 14-1 degree full depth involute teeth occurs when the number of teeth is less than
D .  (a) 10
Answer: Option A

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