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

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

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Industrial Engineering and Production Management
Micro motion study is

Study of man and machine conducted simultaneously
Motion study observed on enhanced time intervals
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

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