LOG104 Reliability, Availability, and Maintainability (RAM): LESSON 1 questions with correct answers

In addition to probability, which of the following are also elements in the measurement of reliability? Select the three alternatives that apply. CORRECT ANSWER 1. ** Performance 2.** Time 3.*** Operating Conditions2 Using the data from the truck example, calculate the generators' MTBR (for-cause). After two years, the fleet had accumulated 1,000,000 operating hours. There were 100 incidents in which a truck broke down due to generator failure. Overall, there were 1,200 "maintenance events" involving generators, as follows: 100 on-equipment repairs (by turning wrenches, screwdrivers, etc.) 200 removals to facilitate other maintenance (50 of these resulted in damage to the generators). 900 removals for-cause that were forwarded to the depot for repair, where 600 were identified as design or manufacturing related problems CORRECT ANSWER 1,111 hours Which of the following address supply and maintenance issues affecting a system? CORRECT ANSWER Mean Time Between Demand (MTBD) Mean Time Between Failure (MTBF)Mean Time Between Removal (MTBR)Mean Time Between Unscheduled Maintenance (MTBUM) Which of the following is a brief definition of maintainability? CORRECT ANSWER The relative ease and economy of time and resources with which an item can be retained or restored to a specific condition.