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What is the main limitation of bar chart?
1. It does not help in material and labour planning.
2. It does not show all the activities of a project.
3. It does not indicate critical activities of a projects.
4. Project duration cannot be estimated.

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Correct Answer - Option 3 : It does not indicate critical activities of a projects.

Explanation:

Bar chart (Gantt chart):

(i) It is a pictorial chart.

(ii) It has two coordinate axes, the horizontal coordinate represents the elapsed time and the vertical coordinate represents the job or activity to be performed.

(iii) The beginning and end of each bar represent starting and finishing times of a particular activity respectively.

(iv) The length of the bar shows the time required for completion.

Limitation of a bar chart:

(i) Lack of degree of detail.

(ii) A bar chart does not show the progress of work and hence it can not be used as a control device.

(iii) A bar chart is unable to depict the interdependencies of various activities clearly.

(iv) No provision to account for time uncertainties.

(v) Bar chart can not distinguish between critical and non-critical activities and hence resource smoothening and resource leveling can not be done.

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