In an electrical resistance type temperature indicating system, what is the signal source?

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Multiple Choice

In an electrical resistance type temperature indicating system, what is the signal source?

Explanation:
The signal source is the temperature sensing element—the temperature bulb. In a resistance-type temperature indicator, temperature changes cause the element’s electrical resistance to vary. That resistance change is the actual electrical signal that the rest of the system uses as input. The microprocessor, ADC, and display handle processing and presentation, but they do not originate the signal; they transform and show what the sensing element provides.

The signal source is the temperature sensing element—the temperature bulb. In a resistance-type temperature indicator, temperature changes cause the element’s electrical resistance to vary. That resistance change is the actual electrical signal that the rest of the system uses as input. The microprocessor, ADC, and display handle processing and presentation, but they do not originate the signal; they transform and show what the sensing element provides.

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