Motors - Speed variation with torque. Applications requiring constant speed at all torque demands should use a shunt-wound dc
motor. If speed change with load must be minimized, a dc
motor regulator, such as one employing feedback from a tachometer, must be used. When the dc
motor speed must decrease as the load increases, compound or series-wound dc motors may be used. Or, a dc
motor power supply with a drooping volt-ampere curve could be used with a shunt-wound dc
motor. DC Motors - Reversing...
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