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A__________ translates signals from the controller into the motor voltage and current signals.

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A__________ translates signals from the controller into the motor voltage and current signals.

(a) Servo motor

(b) Servo amplifier

(c) AC motor

(d) DC motor

This question was posed to me in an interview for internship.

The query is from Robotic Control System in portion Time Response Analysis, Design Specifications and Performance Indices of Control Systems

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The correct answer is (b) Servo amplifier

For explanation I would say: A servo amplifier monitors the feedback signal from the servomechanism and continually adjusts for deviation from expected behaviour and translates signals from the controller into the motor voltage and current signals.

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