Define the term reliability.
. Explain why a product or system might have an overall reliability that is low even though it is comprised of components that have fairly high reliabilities.
. What is redundancy and how can it improve product design?
1. Consider the following system:
Determine the probability that the system will operate under each of these conditions:
a. The system as shown.
b. Each system component has a backup with a probability of .90 and a switch that is 100 percent
c. Backups with .90 probability and a switch that is 99 percent reliable.