Sample CRE Questions

1.Assume you have three equal units that operate together as parallel units. The failure rate of each unit is λ=0.01. The reliability of a single ...

to have a constant failure rate. What is the failure rate? A .0.005 per month B. 0.004 per month C. 0.01 per month D. 0.0009 ...

1. The probability that a light switch will work at the nth demand is 0. 9999/n^(1/n). The switch is used 2 times per day. What ...

1. An engineer feels confident that the failure probability on a new electro­ magnetic relay is less than 0.01. The specifications require, however, only that ...

1. 100 integrated circuits (ICs) are cycled in an environmental test chamber for a test equivalent to 1000 hours of operation. At the completion of ...