Is the rated power of the motor equal to the load power

The rated power of the motor is not equal to the load power. Because when selecting the motor capacity, we should consider the future aging of the driven machinery, so we need to add a margin to the mechanical load power. The power level of the motor is not exactly equal to the calculated power of the machinery, but also the power level of the motor, so the power of the motor is generally larger than that of the driven machinery

Does impact toughness belong to the physical properties of metal materials?
The following are not physical properties of metal materials ()
A conductivity B thermal conductivity C thermal expansion D impact toughness
The chemical properties of metallic materials do not include ()
A acid resistance B alkali resistance C corrosion resistance D impact toughness

Impact toughness belongs to the mechanical properties of metal materials. Physical properties include electrical conductivity, thermal conductivity, thermal expansion, etc

Fracture toughness and impact toughness of metal materials
Are these two concepts the same?
The unit of fracture toughness is mpa.m1/2
The unit of impact toughness is KGM / cm2

It's not the same concept. I don't have any books on hand. Many books have them. I suggest you take a look at them. For example, fracture mechanics

Fracture toughness and impact toughness
What's the difference between them?

Fracture toughness is a measure of a material's ability to prevent the propagation of macroscopic cracks. It is also a toughness parameter of a material's resistance to brittle failure. It has nothing to do with the size and shape of the crack itself and the magnitude of the applied stress. It is an inherent property of a material and is only related to the material itself, heat treatment and processing technology

What is the physical meaning of impact toughness?

Impact toughness:
It reflects the resistance of metal materials to external impact load. It is generally expressed by impact toughness value (AK) and impact work (AK), and its units are jgcm2 and J (joule) respectively, It can be divided into normal temperature, low temperature and high temperature impact test according to the different test temperature, and can be divided into "V" notch and "U" notch impact test according to the notch shape
The practical significance of impact toughness index is to reveal the brittle tendency of materials

The red planet carries countless reveries and hopes of mankind

Bearing capacity
Bear the load
In the book of songs, Da Ya, Ba, the shortened version is recorded by Kong Yingda of the Tang Dynasty: "if the version is bound by ropes, and the version is fully built, it will rise and fall to the top, and bear the load of each other, so as to make this ancestral temple."
Chapter 5 of Du Pengcheng's in a peaceful day: "we hope to use this power to shake the world, to carry Xiao Liu to a new situation of life."

What does it mean to bear

To accept, to bear the main part of the loss; to support or bear [weight or pressure] the dam cannot bear the heavy waves; to inherit and bear the inheritance

What does it mean to bear

Let's see here

What is the meaning of "Cheng" in "bear"

To bear, receive, continue, and connect;

What are the common plastic materials? Brittle materials? Low carbon steel, cast iron belong to which category?

Plastic material is a kind of material which is not destroyed under the action of external force, although it has a significant deformation. The commonly used plastic materials are steel, copper, aluminum alloy and so on
Brittle material is a kind of material which is destroyed and fractured only by small deformation under the action of external force (such as tension, impact, etc.). The commonly used brittle materials are cast iron, ceramics, stone, glass, etc
Low carbon steel is a plastic material. Cast iron is a brittle material

Is the rated power of the motor equal to the load power