question 17.14 please

CHAPTER 17 MAINTENANCE AND RELIABILITY 673 in- 0- boards; this is a great concept, but the hot-air temperature con- trol lacks reliability. According to Wing, engineers at WSSI have improved the reliability of the critical temperature controls. The new system still has the four sensitive integrated circuits control- ling the temperature, but the new machine has a backup for each. The four integrated circuits have reliabilities of .90, 92, 94, and .96. The four backup circuits all have a reliability of .90. a) What is the reliability of the new temperature controller? b) If you pay a premium, Wing says he can improve all four of the backup units to 93. What is the reliability of this option?Px .... 17.14 As VP for operations at Mndez-Piero Engineering, you must decide which product design, A or B, has the higher reli- ability. B is designed with backup units for components R, and R. What is the reliability of each design? PX Product Design A R RA pe as peuve if the medical 8 Let the e .95, and ability t manage R2 = 0.85 this pre for bac R = 0.90 Ra = 0.90 Additi R3 = 0.85 Probl 17.1 for the follow What is the reliability of the system? PX Hint: The system functions if either R, or R, work. Rick Wing, salesperson for Wave Soldering Systems, Inc. (WSSI), has provided you with a proposal for improving the temperature control on your present machine. The machine uses a hot-air knife to cleanly remove excess solder from printed circuit Num! Num breal control system shown in Problem 17.9 changed to the redundant parallel system shown in Problem 17.10? 17.12 Elizabeth Irwin's design team has proposed the fol- lowing system with component reliabilities as indicated