| A pinion of \[14\frac{1{}^\circ }{2}\] pressure angle and 48 involute teeth has a pitch circle diameter of 28.8 cm. It has |
| 1. Module of 6 mm |
| 2. Circular pitch of 18 nun |
| 3. Addendum of 6 mm |
| 4. Diametral pitch of \[\frac{11}{113}\] |
A) 2 and 3
B) 1 and 3
C) 1 and 4
D) 2 and 4
Correct Answer: B
Solution :
\[m=\frac{d}{z}=\frac{288}{48}=6\,mm\] \[p=m=\pi \times 6=18.84\,mm\] \[{{h}_{a}}=1\,m=6\,mm\] \[P=\frac{1}{m}=\frac{1}{6}\]
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