Over Load Relay with Bimetal, how does it work?

Over Load Relay with Bimetal, how does it work?

A. Use the principles of different metals. When receiving heat simultaneously, the growth rate is not equal.
B. Use the magnetic field principle of the contactor Through metal plates
C. Using the principles of different metals When not being heated simultaneously, the rate of contraction is not equal
D. Use the principle of electromagnetic fields to induce the metal sheet to open - close the contactor face.

Show Answer

Answer: A

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