Industrial Engineering and Production Management
Time study is

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

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Industrial Engineering and Production Management
A big advantage of PERT over Gantt charts is that in the former case

Interrelationship among activities is clearly shown
Early start and late finish of an activity are clearly marked
Activity times are clear
Activities and events are clearly shown

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Industrial Engineering and Production Management
In order that linear programming techniques provide valid results

Relations between factors must be linear (positive)
Only one factor should change at a time, others remaining constant
Relations between factors must be linear (negative)
Either (A) or (B)

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