Question

Determine the length of cross belt of connecting two pulleys 5 cm apart. The diameter of driving and driven pulleys are 1.25 m and 0.75 m respectively.

(a) 1 m

(b) 150 m

(c) 13.34 m

(d) 20 m

This question was addressed to me in an interview for job.

I need to ask this question from Mechanical Power Transmission topic in section Mechanical Power Transmission of Farm Machinery

Answer 1

Right option is (c) 13.34 m

The explanation is: L=2x+\(\frac{π}{2}\) (D1+D2)+\(\frac{(D1+D2)^2}{4x}\)=2*5+\(\frac{π}{2}\) (1.25+0.75)+\(\frac{(1.25+0.75)^2}{(4*5)} \)

L = 13.34 m.