Certified Maintenance and Reliability Technician (CMRT) Practice Test

In a typical machine train, it is essential to graph the total number of machines present. This approach provides a comprehensive overview of the entire system's performance and interactions, allowing for the identification of any issues affecting the entire train. By including all machines, maintenance and reliability technicians can assess how each machine influences the others in terms of alignment, vibration, and operational efficiency.

Graphing only one or two machines, as mentioned in the other choices, would fail to capture the complete relationship between the machines in the train. It could lead to misunderstandings about how a fault in one machine may impact the entire system. Focusing only on misalignment ignores other critical parameters that could affect performance, such as wear, load distribution, and machine interactions. Therefore, including the total number of machines provides a holistic view necessary for effective maintenance planning and decision-making.