What device ________________directly converts temperature into voltage?
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Answer: A. Thermocouple
Explanation
Thermocouples generate a small thermoelectric voltage directly proportional to measured temperature differences. The Seebeck effect enables direct conversion of thermal energy into electrical potential signals. Two dissimilar metals joined together create a functional temperature-sensing thermoelectric voltage device. The Seebeck effect describes voltage generation when temperature differences exist across junctions. Thermocouples operate without external power supplies, measuring temperature via induced voltage. Industrial sensors rely on standardized thermocouple calibration curves for accurate thermal readings.
Industrial furnaces use thermocouples to monitor extremely high operating temperatures safely. Aerospace engineering applications utilize thermocouples for reliable engine exhaust temperature sensing. Accurate temperature conversion is vital for process control systems in chemical manufacturing. Potentiometers measure position or voltage division rather than directly converting temperature. Gear trains transmit mechanical power and motion rather than performing electrical temperature conversion. Linear variable differential transformers measure mechanical displacement rather than thermal energy.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
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