A system has three components and all three components need to be operational for 24 hours;
Monday to Friday. During a particular week, failure of component 2 occurred as follows:
•Monday = 6 PM to 9 PM
•Tuesday = 8 AM to 10 AM
•Wednesday = No failure
•Thursday = 8 PM to 9 PM
•Friday = No failure
•Saturday = 5 AM to 8 AM
•Sunday = 6 PM to 9 PM
What is the mean time between failures on component 2?
A.
30 Hours
B.
38 Hours
C.
40 Hours
D.
42 Hours
Mon – Hours without failure =21
Tue – Hours without failure =22
Wed – Hours without failure =24
Thu – Hours without failure =23
Fri – Hours without failure =24
Sum of hours without failure =114 divided by number of failures=3
114/3=38
MTBF=38
0
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