Question

Why do we use bimetallic strip as thermostat switch?

Answer 1

Answer:

A traditional thermostat has two pieces of different metals bolted together to form what's called a bimetallic strip (or bimetal strip). The strip works as a bridge in an electrical circuit connected to your heating system. ... Eventually, it bends so much that it breaks open the circuit.

Answer 2

Answer:

A bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated, usually steel and copper, or in some cases steel and brass.The strip works as a bridge in an electrical circuit connected to your heating system. Eventually, it bends so much that it breaks open the circuit.