What defines a critical activity in network scheduling____________________?
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Answer: C. zero float,
Explanation
A critical activity in project network scheduling possesses zero total float time within the operational path. Zero float means that any unexpected delay in completing a critical task directly postpones the entire project finish date. Identifying activities with zero float helps project managers focus resources on the most time-sensitive construction steps. Network scheduling methods like the Critical Path Method calculate earliest and latest start and finish dates for tasks. Total float represents the maximum amount of time an activity can be delayed without delaying the final project completion. The sequence of critical activities forms the longest continuous path through the entire project network diagram.
Option A is incorrect because maximum float indicates flexible, non-critical tasks that tolerate significant delays. Option B is vague and incorrect since float must be precisely zero, not merely minimized, for critical tasks. Option D refers to average float values, which have no direct role in determining critical project paths.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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