Industrial applications use dc motors because the speed-torque relationship can be varied to almost any useful form -- for both dc motor and regeneration applications in either direction of rotation. Continuous operation is commonly available over a speed range of 8:1. Infinite range (smooth control down to zero speed) for short durations or reduced load is also common.

DC motors are often applied where they momentarily deliver three or more times their rated torque. In emergency situations they can supply over five times rated torque without stalling (power supply permitting).

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