Question

Human factors engineering or ergonomics is concerned with fitting the worker to a task or the task to the worker. A man-machine system is considered a closed loop system. Which one of the following do not make up the closed loop system?

A)
Reacts

B)
Data Input

C)
Senses of Man

D)
Size of material

Answer 1

A man-machine system in human factors engineering is a closed loop system that includes the components of reacts, data input, and senses of man.

Step-by-step explanation:

In the field of human factors engineering or ergonomics, a man-machine system is considered a closed loop system. The closed loop system consists of several components that work together, including:

1. Reacts: The system utilizes a feedback mechanism where the machine reacts based on the input received from the worker.
2. Data Input: The worker provides input to the system, which is used to control the machine's actions.
3. Senses of Man: The worker's senses are essential for monitoring and perceiving the system's output and the environment.

However, the Size of material does not make up the closed loop system. While it may be a factor to consider in designing the system, it is not directly part of the closed loop mechanism.