Bimetallic thermostat is an example of:

Explanation

Bimetal Thermostats use two different kinds of metal to regulate the temperature setting. When one of the metals expands more quickly than the other, it creates a round arc, like a rainbow. As the temperature changes, the metals continue to react differently, operating the thermostat. ○ The basic working principle of a thermometer is thermal expansion. When the thermometric matter gets the heat energy then it expands and this expansion shows the increased temperature reading on the calibrated scale.○ A heat engine is a system that converts heat to mechanical energy, which can then be used to do mechanical work. ○ Isobaric Process is a thermodynamic process that takes place at constant pressure.○ Electric field is defined as the electric force per unit charge.So, options A, C, and D are wrong .