Numerical - Number of teeth on wheel & pinion are equal, given pressure angle - Theory of Machines - 2

Q.  Calculate the number of teeth on wheel, when number of teeth on pinion and wheel are equal. Pressure angle is 25o
- Published on 06 Aug 15

a. 11
b. 12
c. 7
d. 9

ANSWER: 9

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    Discussion

  • Om   -Posted on 24 Apr 21
    I think Avadi is correct
  • Avadi   -Posted on 23 Apr 21
    When coefficient of addendum for wheel & pinion is not given mean (coefficient of addendum for wheel=coefficient of addendum for pinion) in that case{addendum= module mean Aw=1=Ap}
    T=t=(2×1)÷[(v1+(3×sin square 25))-1]
    =8.358~approx=9
  • Shraddha Kadam   -Posted on 05 Oct 20
    ans comes as 11.19 so it should be 11 or 12 n not 9 i suppose

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