Discussion
In the steady state, the motor torque of a drive is
Answer: D
Correct answer: equal to the load torque
Steady speed means \( d\omega/dt = 0 \), so the torque equation gives \( T = T_l \) exactly. Any excess would be accelerating the inertia and the speed would not be steady. Note that friction and windage are part of the load torque as seen by the motor, not a separate deduction from it.
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