Question 43 CEL01 - Chief Engineer - Limited

The Correct Answer is A ### Why Option A is Correct: Option A accurately distinguishes between Gantt charts and PERT charts based on their structure and primary utility in project management: 1. **Gantt Chart:** A Gantt chart is fundamentally a **bar chart** where the horizontal axis represents time (usually an actual calendar timeline) and bars represent tasks. This structure makes it exceptionally good for visualizing task durations, scheduling, and tracking **progress against a specific calendar date**. 2. **PERT Chart (Program Evaluation and Review Technique):** A PERT chart (often implemented as a Network Diagram, or **line diagram** involving nodes and arrows) focuses on the logical flow of the project. The nodes represent events or milestones, and the arrows represent activities, clearly illustrating the **dependencies** between tasks and the critical path. While they include time estimates, their primary strength is mapping the relationships, flow, and dependencies of the tasks/milestones, rather than tracking progress against a linear calendar view. Therefore, the statement that the PERT chart (line diagram) visualizes dependencies and milestones, and the Gantt chart (bar chart) visualizes progress against an actual calendar, is the correct representation of their difference. ### Why Other Options Are Incorrect: * **B) The Gantt chart makes it easy to visualize task dependencies and milestones, whereas the PERT chart makes it easy to visualize progress with respect to an actual calendar. Both are line diagrams.** * This is incorrect because it reverses the primary utility: Gantt charts excel at calendar-based visualization, not dependency visualization (which PERT does better). Furthermore, Gantt charts are bar charts, not line diagrams. * **C) The PERT chart (which is a bar chart) makes it easy to visualize task dependencies and milestones, whereas the Gantt chart (which is a line diagram) makes it easy to visualize progress with respect to an actual calendar.** * This is incorrect because it misidentifies the chart types: PERT charts are network (line) diagrams, not bar charts, and Gantt charts are bar charts, not line diagrams. * **D) The Gantt chart makes it easy to visualize task dependencies and milestones, whereas the PERT chart makes it easy to visualize progress with respect to an actual calendar. Both are bar charts.** * This is incorrect because it reverses the primary utility (same error as B) and misidentifies the chart types (same error as C, stating both are bar charts when only the Gantt chart is).