Question

An automobile engine develops 100KW when rotating at a speed of 1800 rev/min. The torque it delivers (in N-m)

Answer 1

It is given that

Power of the engine,

$P=100kW=100000W$

Angular speed,

$\omega =1800rev/min$

Now, we know that

$Power=Torque\times AngularSpeed$

$\to 100000=Torque\times 60\pi$

$\to Torque=530.78Nm$