Question

What is the maximum power transmitted by a single plate clutch at speed of 3600 rev/min if the coefficient of friction is 0.4 and the linings have a radius of 160mm inner and 190mm outer? The total spring force is 2.5 kN.

• A. 132 kW
• B. 139 kW
• C. 152 kW
• D. 160 kW

Hint:

Power transmitted by a single plate clutch is given by: \[ P = \frac{2\pi N T}{60} \] where \( T = \mu \times F \times r_m \)

Answer 1

The Correct Option is B

\(\text{Given:}\) \[ \mu = 0.4, \quad r_1 = 160 \, \text{mm}, \quad r_2 = 190 \, \text{mm}, \quad F = 2500 \, \text{N}, \quad N = 3600 \, \text{rev/min} \] The maximum power transmitted by the clutch is given by: \[ P = \frac{2 \pi N F (r_2 - r_1) \mu}{60} \] Substituting the values: \[ P = \frac{2 \pi \times 3600 \times 2500 \times (0.19 - 0.16) \times 0.4}{60} \] \[ P = 139 \, \text{kW} \]