Discussion
Assertion (A): Miner's rule can be substantially in error for real service spectra.
Reason (R): It sums damage linearly and takes no account of load sequence.
Select the correct answer from the options below.
Answer: B
Both are true and the second explains the first. Sequence effects, particularly overload retardation, mean the same set of cycles applied in different orders gives different lives. The rule remains useful as a first estimate because of its simplicity.
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