Question

an automobile engine develops 100 KW when rotating at a speed of 1800 rev/min. what torque does it deliver?

Answer 1

Power of the engine, P = 100 kW = 100000 W

Angular speed, ω = 1800 rev/min = 1800 × 2π/60 rad/s

=> ω = 60π rad/s

We know,

Power = Torque × Angular Speed

=> 100000 = Torque × 60π

=> Torque = 530.78 Nm