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K Jack
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Join Date: Sep 2012
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Reliability

04/17/2013 2:33 PM

How do i calculate the failure rate, reliability @ 1000 hours and mean time to failure of an electrical system consisting of three units connected in series with the failure rate for each unit @ constant as follows λ1= 0.000004/hr, λ2=0.0000032/hr, λ3=0.0000098/hr.
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jack of all trades
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#1

Re: Reliability

04/17/2013 3:37 PM

Your questions look like homework questions, we don't answer homework questions here you know.

Have you tried a simple internet search for your answer?

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lyn
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#2

Re: Reliability

04/18/2013 12:38 AM

Failure rate - Wikipedia, the free encyclopedia
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PWSlack
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#3

Re: Reliability

04/18/2013 3:18 AM

Take the reciprocal of the added reciprocals?

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nick name
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#4

Re: Reliability

04/18/2013 4:39 AM

failure rate of the 3 connected as you mention = 1.7e-5/h

Survival probability = 1- failure rate for a chain Sp= Π (1-fr)

Fr chain= 1- Sp chain
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