How does the energy consumption braking of motor change the stored mechanical energy into electrical energy

How does the energy consumption braking of motor change the stored mechanical energy into electrical energy

Motor energy consumption braking is to cut off the stator winding of the motor from the AC power supply, and connect its two terminals to the DC power supply immediately. The DC current generates a static magnetic field in the stator winding. Due to the mechanical inertia, the rotor is still rotating. Therefore, the electromotive force is induced in the rotor winding, and the induced current (mechanical energy is converted into electrical energy) is generated, and the motor is in the state of power generation, Its electromagnetic torque is opposite to the rotation direction of the rotor, which plays a braking role

Why can refrigerators convert electric energy
Is it kinetic energy or potential energy, or both

It should be mechanical energy
Because kinetic energy and potential energy can be subdivided only under the premise of discussing mechanical energy, both of them are mechanical energy
If we want to discuss the transformation of energy, we can only say it on a large scale
In other words, although only kinetic energy participates in energy conversion, kinetic energy belongs to the category of mechanical energy, so it should be called mechanical energy
If we are talking about the conversion of energy in bicycle climbing, the energy in the process is mechanical energy, so we need to point out whether it is kinetic energy or potential energy
Qingdao's high school entrance examination is such a provision, I do not know whether other cities are so
If the question can only be selected from kinetic energy and potential energy, and there is no third answer, then choose kinetic energy

What energy do air conditioners and refrigerators convert into?

According to the working principle of refrigerator and air conditioner, electric energy should be converted into mechanical energy. Because this kind of electric appliance first uses compressor to make refrigerant such as Freon flow in different parts of refrigerator or air conditioner, resulting in refrigerant transformation between liquid state and gas state, so as to absorb or release heat energy

The formula of calculating pump flow, head and shaft power

Centrifugal pump
Shaft power = flow × head × 9.81 × medium specific gravity △ pump efficiency
Discharge unit: m3 / s,
Head unit: M
Medium specific gravity unit: kg / m3
Shaft power unit: Watt