Question

A multidisc clutch, n=8, d0=15cm, di=11 cm. Determine the total load on springs, power = 8hp, N=1000 rpm, μ=0.08.

(a) 163.133 N

(b) 200.147 N

(c) 157.142 N

(d) 186.150 N

The question was posed to me during a job interview.

I'm obligated to ask this question of Farm Tractor in portion Farm Tractor of Farm Machinery

Answer 1

Correct answer is (c) 157.142 N

The best I can explain: rm = \(\frac{ri+r0}{2}=\frac{0.075+0.055}{2}\) = 0.065 m

P = \(\frac{2πNT}{4500} \)

T = \(\frac{P*4500}{2πN}=\frac{8*4500}{2π*1000}\)=5.72 Nm

T = neμWrm

W = \(\frac{(T)}{ne*μ*rm}=\frac{5.72}{7*0.08*0.065} \)

= 157.142 N