Question 71

A satellite has two redundant control systems, each has a failure rate (lambda) = 1×10 -6 failures/hour. If one of the systems fails, the failure rate for the remaining system increases to 2×10 -5 failures/hour.
What is the reliability of the redundant control systems at 175,000 hours?
Response:
  • Question 72

    A failure that leaves the system fully functional is:
    Response:
  • Question 73

    Ideally for a FRACAS to be effective, how many failures should be allowed to pass before corrective action is to be undertaken?
    Response:
  • Question 74

    What is the reliability of the power switching system schematic on the left after 30,000 hours ? The electric utility primary power system (A) has a failure rate of 0.00001 failure/hour.
    The motor generator backup system (B) has a failure rate of 0.0007 failure/hour. The standby system has an imperfect switch with 0.90 reliability per operation.
    Response:
  • Question 75

    In the Taguchi design methodology, what are noise factors?
    Response: