Numerical - Reliability, given time & failure rate

Q.  Failure rate for safety valve working for 400 hours is 3 x 10–6 failures/hour. What is the reliability of safety valve?
- Published on 18 Sep 15

a. 0.998
b. 0.989
c. 0.888
d. 0.899

ANSWER: 0.998

Post your comment / Share knowledge

Enter the code shown above:
(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)