What will be the probability of failure

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Reference no: EM133013283

Question 1. A disk drive has a constant failure rate and an MTTF of 4000 hr.

a) What will be the probability of failure for one of year of operation if two of the drives are placed in active parallel and the failures are independent?

b) What will be the probability of failure for one of year of operation if the common-mode errors are characterized by Beta=0.2?

Question 2. For a K-out-of-N system is designed as a 2 of 3 system. Evaluate the following:

a) Express R(t) in terms of the three individual failure rates

b) Find the system MTTF

c) Set lambda*t equal to 1.0 and calculate the system reliability. How does this reliability compare with a single unit with the same lambda?

Both the problems will require step by step calculation and clear explanation, so its easily undestood.

Reference no: EM133013283

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