+2 votes
in Farm Machinery by (38.9k points)
What is the length of cross belt to connect two pulleys 4 m apart. the diameter of driving and driven pulley is 1.25 m and 0.75m respectively?

(a) 12.39m

(b) 11.39m

(c) 13.39m

(d) 10.39m

I have been asked this question in an online quiz.

Question is taken from Power Transmission System topic in chapter Ignition and Power Transmission of Farm Machinery

1 Answer

+1 vote
by (243k points)
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Best answer
Right choice is (b) 11.39m

For explanation: Lc = 2x + \(\frac{π}{2}\)(d1+d2)+\(\frac{(d1+d2)^2}{4x} \)

= 2*4 + \(\frac{π}{2}\)(1.25+0.75) + \(\frac{(1.25+0.75)^2}{4*4} \)

= 11.39m.

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