Industrial Engineering and Production Management
Work study is most useful

In judging the output of a man and improving it
Where production activities are involved
In judging the rating of machines
In improving industrial relations

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

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

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