Quiz Your Learning: 1. The mean time to repair (MTTR) for a repairable system is 30 minutes. When maintenance time changes from 20 minutes to 40 minutes, the net increase in maintainability is closest to (A) 0.15 (B) 0.25 (C) 0.45 (D) 0.60 2. A 20 mm HSS drill with a point angle of 118 ̊ is used for drilling a through-hole on a metallic plate of thickness 100 mm with a cutting speed of 333.33 mm/s and feed of 0.22 mm/rev. Assuming that the drill is touching the surface of the plate at the start, the drilling time (in s) is closest to (A) 85 (B) 90 (C) 96 (D) 100 3. An acceptance sampling plan is selected with sample size n = 80, acceptance number c = 2 for a lot size of 10,000 units. The probability of accepting the lot is based on Poisson distribution. Assuming rectification inspection, if incoming lot quality p is 0.03 and mean (λ) is 2.4, the average outgoing quality (AOQ) is closest to (A) 0.0011 (B) 0.0087 (C) 0.0170 (D) ...
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X-Ray Diffraction · Electrons from a filament directed toward target material by applying a high electric field. This electron then strikes on target materials which result in heat X-ray radiation. · These X-rays then directed toward sample need to be analyze · X-ray diffraction used to determine crystal structure, phase identification, crystal size, crystallographic texture, defect studies, thin-film quality and residual stresses. · The wavelength of X-rays for diffraction falls in the range of 0.5-2 A 0 · Bragg’s law: Essential condition for diffraction results in constructive interference to occur ...