Rated power of motor A machine needs 3.5kw of power to work. If it is connected to a 4kw rated motor, how much energy is consumed per hour? Suppose that the machine is a conveyor belt, its fixed power consumption is 3.5kw, and a motor with rated power of 4kw is connected to provide power for the conveyor belt. Suppose that the motor is an ideal motor, which can completely convert electric energy into mechanical energy, then the power consumption is 3.5kw or 4kw

Rated power of motor A machine needs 3.5kw of power to work. If it is connected to a 4kw rated motor, how much energy is consumed per hour? Suppose that the machine is a conveyor belt, its fixed power consumption is 3.5kw, and a motor with rated power of 4kw is connected to provide power for the conveyor belt. Suppose that the motor is an ideal motor, which can completely convert electric energy into mechanical energy, then the power consumption is 3.5kw or 4kw

The consumption is still the load power of the machine divided by the mechanical efficiency, including the efficiency of the motor, not the rated power of the motor
5 kW x 1 h / efficiency
According to your supplementary question, the power consumption is 3.5W, and the power consumption per hour is 3.5 x 1 = 3.5 (KWH)

Toy motor speeds up
I want to use mobile phone battery (3.7V) to drive a motor, plug in a fan blade, make a small fan, and use it in self-study class
There are a lot of these things on the market, but they are not cool at all. They have to use ordinary batteries. Just when the mobile phone battery is not used, we use the mobile phone battery to make a small fan
How can I improve the motor speed? Don't damage the battery. I'm only in the second year of junior high school. I didn't learn electricity. Please tell me more
If you entangle the motor, what are the precautions?
Gather together to tell me about current, voltage and electromagnetic induction
We must make it simple and save money

The creative spirit of the building owner is praiseworthy. This seems to use the knowledge I learned when I was playing 4WD... The motor is driven by Ampere force, f = nbil, so increasing the number of gates, magnetic induction, current and wire length are useful, so the voltage is certain. The wire resistance of the self-made motor should be small. It's better to use thick silver wire. If it's weak, you can buy two powerful magnets. This is a combination of theory and practice~

Output power, rated power, which work is total work and active work in the same time

Output power × time = active power