Industrial Engineering and Production Management
Time study is carried out

By finding all the significant informations regarding the job, work place and machine tool etc
All of these
By breaking up each operation into small elements which are measurable with the help of the measuring device accurately
By observing and recording the time taken by the operator for an operation

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Industrial Engineering and Production Management
Activity slack or float of any event on a PERT/CPM chart is represented by

Latest finish time of event earliest finish time of the event
Latest start time of the event earliest start time of the event
Anyone of the above
Latest start time of succeeding event earliest finish time of preceding event activity time

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