Which term describes the excitation or stimulus applied to a system from an external source to generate an output?

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Multiple Choice

Which term describes the excitation or stimulus applied to a system from an external source to generate an output?

Input signal is the excitation applied to a system from an external source to generate an output. It’s the external drive you feed into the system to produce a response. The output signal is what the system produces as a result of that drive. The error signal is the difference between the desired result and what is actually produced, used by controllers to adjust the input. The feedback signal is a copy of the output fed back into the system to help regulate its behavior. For example, in an audio amplifier, the input signal is the audio you feed in; the output signal is the amplified sound.

Input signal is the excitation applied to a system from an external source to generate an output. It’s the external drive you feed into the system to produce a response. The output signal is what the system produces as a result of that drive. The error signal is the difference between the desired result and what is actually produced, used by controllers to adjust the input. The feedback signal is a copy of the output fed back into the system to help regulate its behavior. For example, in an audio amplifier, the input signal is the audio you feed in; the output signal is the amplified sound.

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