Industrial Engineering and Production Management
Time study is

Machine setting time
Time taken by workers to do a job
The appraisal, in terms of time, of the value of work involving human effort
Method of fixing time for workers

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

The activity is critical and any delay in its performance will delay the completion of whole project
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
All of these

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