Industrial Engineering and Production Management
Micro motion study is

Motion study of a sequence of operations conducted systematically
Analysis of a man-work method by using a motion picture camera with a timing device in the field of view
Study of man and machine conducted simultaneously
Motion study observed on enhanced time intervals

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Industrial Engineering and Production Management
The basic difference between PERT and CPM is that

Costs are considered on CPM only and not in PERT
Critical path is determined in PERT only
PERT deals with events and CPM with activities
Guessed times are used in PERT and evaluated times in CPM

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