The maximum time required for an activity in most adverse condition is called as _______
- AOptimistic Time.
- BPessimistic Time.Correct
- CMost Likely Time.
- DTotal Expected Time.
Solution
Concept
In PERT analysis, three time estimates are used for each activity: optimistic time, most likely time, and pessimistic time.
Step-by-step solution
1. Understand the three time estimates used in PERT (Program Evaluation and Review Technique). 2. Optimistic time is the shortest time taken if everything goes extremely well. 3. Most likely time is the normal time taken under ordinary working conditions. 4. Pessimistic time is the maximum time taken when everything goes wrong under adverse conditions. 5. Therefore, the maximum time required under the most adverse condition is known as Pessimistic Time. Answer: (B) Pessimistic Time.
Explanation
Pessimistic time (denoted as tp) is the longest possible time needed to finish an activity. It assumes that unfavorable or adverse conditions occur during work. So, it represents the maximum completion time.
Why the other options are wrong
A: Optimistic time is the minimum time needed under ideal or best conditions. C: Most likely time is the time needed under normal conditions. D: Total expected time is the statistical average time calculated using all three estimates.
Shortcut
Pessimistic = worst-case / adverse condition = maximum time.
Common mistake
Students sometimes confuse pessimistic time with total expected time, which is the calculated weighted average of all three time estimates.
Correct answer: B) Pessimistic Time.