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

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

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Industrial Engineering and Production Management
Pick up the incorrect statement about advantages of work sampling

No time measuring devices are generally needed
Calculations are easier, method is economical and less time consuming
Permits a fine breakdown of activities and delays
Simultaneous study of many operators may be made by a single observer

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Industrial Engineering and Production Management
Which of the following are the guidelines for the construction of a network diagram?

Dummy activity consumes no time or resource
Dangling must be avoided in a network diagram
All of the these
Each activity is represented by one and only one arrow in the network

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