Question

Consider the following configuration of solar photovoltaic arrays consisting of crystalline silicon solar cells 1H2 There are two subsystems connected in parallel, each one containing two cells. In order for the system to function, at least one of the two parallel subsystems must work Within each subsystem, the two cells are connected in series, so a subsystem will work only If all cells in the subsystem work. Consider a particular lifetime value to, and we want to determine the probability that the system lifetime exceeds to Let A, denote the event that the lifetime of cell exceeds to 1,2, and that『A) 4). we assume that the A' s are independent events / since the cells are identical whether any particular cell lasts more than to hours has no bearing on whether or not any other cell does 0.6 for every exceeds fo is easily seen to be 0.5904. To what value would 0.6 have to be changed in order to increase the system using PIA) 0.6, the probability that system lifetime lifetime reliability from 0.5904 to 0.61 ? [Hint: Let FA )-p, express system reliability in terms of p, and then let x = p2.] (Round your answer to four decimal aces. Need Help?

Answer 1