Question

thermostat is based on the principal of​

Answer 1

Answer:

Thermostats work on the principle of thermal expansion. ... The most common types of mechanical thermostats typically use either bimetallic strips or bellows filled with gas. While digital thermostats use the same principle, but everything is controlled by a chip and built-in minicomputer.

Explanation:

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Answer 2

Answer:Thermostat works on the principle of thermal expansion of solid materials.