Question: In a closed loop system, reduction in motor speed due to a load is compensated, within the limit, by an error signal which is

In a closed loop system, reduction in motor speed due to a load is compensated, within the limit, by an error signal which is proportional to the drift of speed and is 180 degrees out of phase to the reference setting. Excessive feedback signals will reduce the reference setting. Therefore, the feedback signals at the input of the summing amp can't be larger than the reference signal. The feedback signal should be adjusted to the right level for given load and amplifier gain.

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