A piece of electronic equipment used for aviation has three elements connected in series, or sequence. The reliability of each of the three elements is as follows:
Element A: 0.92 Element B: 0.94 Element C: 0.91
a) Draw how these three elements are connected.
b) What is the reliability of this system?
c) If each of the elements is provided with a standby (connected in parallel) element of equal reliability, by how much is the overall reliability improved?
d) Instead of increasing the reliability of Element C, each of the elements is supported by an identical element in parallel as a back-up. What is the reliability of this system?