No, interconnecting a motor and a generator does not result in infinite energy. The combination of a motor and a generator is known as a motor-generator set, or MG set. When connected, the motor converts electrical energy into mechanical energy to drive the generator, which then converts the mechanical energy back into electrical energy. This setup can be used for various purposes such as voltage conversion, frequency conversion, or providing electrical isolation.
However, energy is not created or destroyed in this process. The motor requires electrical energy to operate, and the generator produces electrical energy. There are losses in the system due to factors like friction, heat, and electrical resistance, which means that the amount of electrical energy generated by the generator will always be less than the electrical energy consumed by the motor.
In practice, an MG set will have some efficiency, which is the ratio of the useful output energy (electrical energy generated) to the input energy (electrical energy consumed by the motor). Due to losses, the efficiency will be less than 100%, meaning that some energy is dissipated as waste in the form of heat or other forms of energy. This prevents the system from generating infinite energy.
The conservation of energy is a fundamental principle in physics, stating that energy cannot be created or destroyed; it can only be transformed from one form to another. Therefore, interconnecting a motor and a generator does not violate this principle or produce infinite energy.