An Electrical Power System Consists of Three Major Components with Reliabilities

Multiple Choice

An electrical power system consists of three major components with reliabilities of 0.99,0.94,and 0.90.In order to improve the reliability,a backup component of reliability 0.90 is added to Component 3.Compute and indicate the composite reliability of Component 3.

A) 0.93
B) 0.92
C) 0.99.
D) 0.92.