In what electrical temperature transmitting system is the system voltage generated by the magnitude of temperature difference between hot and cold junctions?

Correct Answer: Option B — Thermocouple

Thermocouples operate on the Seebeck effect, where a voltage is generated proportional to the temperature difference between the hot and cold junctions of two dissimilar metals. This voltage is measured by a pyrometer or controller to provide accurate temperature readings in various marine engineering applications.