GATE CE 2025 Set 1 — Question 42

MSQ+2 / -0MediumNetwork AnalysisConstruction ManagementStructural EngineeringPERTFloats

Structural Engineering → Construction Management → Floats

Last updated 5 September 2026

Question

In the context of construction project management, which of the following statements is/are true:

Correct answer (B) The programme evaluation and review technique (PERT) is best suited for projects with large uncertainties in the duration of activities; (D) Free float is the amount of time by which the start of an activity can be delayed without causing a delay in the start of a following activity Solution (A) False : A dummy activity is used to show logical dependencies and consumes zero time and zero resources. (B) True : PERT is a probabilistic technique specifically designed for projects where activity durations are not well-defined or have high uncertainty. (C) False : While modern software can show it, Gantt charts are primarily bar charts for scheduling. The Critical Path Method (CPM) or PERT are the standard tools for identifying the critical path. (D) True : This is the standard definition of free float—the delay possible without affecting the earliest start time of any immediate successor activity. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (B) The programme evaluation and review technique (PERT) is best suited for projects with large uncertainties in the duration of activities; (D) Free float is the amount of time by which the start of an activity can be delayed without causing a delay in the start of a following activity Solution (A) False : A dummy activity is used to show logical dependencies and consumes zero time and zero resources. (B) True : PERT is a probabilistic technique specifically designed for projects where activity durations are not well-defined or have high uncertainty. (C) False : While modern software can show it, Gantt charts are primarily bar charts for scheduling. The Critical Path Method (CPM) or PERT are the standard tools for identifying the critical path. (D) True : This is the standard definition of free float—the delay possible without affecting the earliest start time of any immediate successor activity.

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