Industrial Engineering and Production Management
The important file in making a PERT is

An event can't be accomplished until activities leading to it are completed
Length of arrow has nothing to do with time
No activity from any event can be started from preceding event till it is completed
All of the these

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Industrial Engineering and Production Management
Critical Path Net Work helps an engineer

To concentrate his attention on critical activities
To divert the resources from noncritical advanced activities to critical activities
All of these
To be cautious for avoiding any delay in the critical activities to avoid delay of the whole project

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