Question

The following statements about mechanical principles and design are correct ( )

A. Mechanism motion analysis can draw the location map of the mechanism.

B. Institutional motion analysis can determine whether interference has occurred.

C. Mechanism motion analysis can find out the upper and lower limit positions.

D. Mechanism motion analysis can determine the trajectory of points

Answer 1

Answer: C. Mechanism motion analysis can find out the upper and lower limit positions.

The following statements about mechanical principles and design are correct C. Mechanism motion analysis can find the upper and lower limit positions. 

At the same time, mechanism motion analysis can determine the trajectory of points, but this is not the focus of mechanical principles and design.

In mechanical principle and design, the main purpose of mechanism motion analysis is to find out the upper and lower limit positions of the mechanism. 

Through the upper and lower limit positions, parameters such as the range of motion and maximum stroke of the mechanism can be determined, thus providing a basis for the design. Therefore, option C is correct.

Answer 2

The principles of mechanics mainly study the laws of mechanical motion, mechanism analysis and design, and basic theories such as force transmission and conversion. 

Design is based on these principles and combined with actual application needs to carry out creative conception and specific implementation of mechanical structures, transmission systems, control systems, etc. 

A good grasp of mechanical principles is the basis of design innovation, and design practice in turn promotes the deepening and development of principles. 

The two complement each other and jointly promote the advancement and application of mechanical technology.