100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
LOG104 Reliability, Availability, and Maintainability (RAM) : LESSON 1 correctly answered to pass $12.99   Add to cart

Exam (elaborations)

LOG104 Reliability, Availability, and Maintainability (RAM) : LESSON 1 correctly answered to pass

 5 views  0 purchase
  • Course
  • LOG104
  • Institution
  • LOG104

LOG104 Reliability, Availability, and Maintainability (RAM) : LESSON 1 correctly answered to pass

Preview 2 out of 7  pages

  • August 5, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • LOG104
  • LOG104
avatar-seller
Sakayobako30
LOG104 Reliability, Availability, and
Maintainability (RAM) : LESSON 1
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.



The table shows the Mean Miles Between Failure for the two cars. Which car is more reliable?

, Categories Hard Top Convertible



Miles 130,000 85,000



Number of Failures 3 7



Mean Miles Between Failures 43,333 miles 12,143 miles - correct answer ✔✔Hard Top



Based on the data, which car takes less time to repair?



Categories Hard Top Convertible



Number of Failures 3 7



Total Repair Time 30 hours 42 hours



MeanTime To Repair 10 hours 6 hours - correct answer ✔✔Convertible



Which of the following are reliability factors? Select the two alternative that apply. - correct answer
✔✔1.*** The number of miles a tire can accumulate before it wears out



2.***** The number of hours a computer operates before it fails



How is availability defined? - correct answer ✔✔The degree to which an item is operational at the start
of a mission when the mission is called for at an unknown time



Which of the following are the sub-elements of availability? Select the three alternatives that apply. -
correct answer ✔✔1.*** ~ Achieved Availability



2. *** ~ Inherent Availability

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Sakayobako30. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

82191 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.99
  • (0)
  Add to cart