Industrial Engineering and Production Management
Which of the following are the guidelines for the construction of a network diagram?

Dummy activity consumes no time or resource
Each activity is represented by one and only one arrow in the network
Dangling must be avoided in a network diagram
All of the these

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Industrial Engineering and Production Management
When slack of an activity is positive

It represents that a programme falls behind schedule and additional resources are required to complete the project in time
It represents a situation where extra resources are available and the completion of project is not delayed
Any one of the above
The activity is critical and any delay in its performance will delay the completion of whole project

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