Allied & ICAR Exam Bank • ALLIED_1077 NAT • 2 Marks

Section 2: Farm Machinery

Machine Design

Subtopic: Clutches and Brakes

Question Statement:

A single-plate friction clutch with both sides active has inner radius $r_1 = 80\text{ mm}$ and outer radius $r_2 = 120\text{ mm}$. Under uniform wear theory, the mean friction radius $R_m$ in mm is:

Answer Key:

100

Step-by-Step Solution & Explanation

Under uniform wear theory: $R_m = \frac{r_1 + r_2}{2} = \frac{80 + 120}{2} = 100\text{ mm}$.
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