Bimetallic thermostat is an example of:
Correct answer: B. Thermal expansion
- A. Electric field
- B. Thermal expansion
- C. Heat engine
- D. Isobaric process
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 .
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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