A braking torque of 2 kN-m is applied on a machine member to reduce the speed from 2000 rpm to 500 rpm in 10 sec. The specific heat of the brake material is 500 J/kg °C. The temperature rise for the brake per unit mass during braking period is
A. 45°C
B. 34°C
C. 109.4°C
D. 91.3°C
Answer: Option D
This Question Belongs to Automobile Engineering >> Braking System
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