Industrial Engineering and Production Management
When slack of an activity is positive

Any one of the above
The activity is critical and any delay in its performance will delay the completion of whole project
It represents a situation where extra resources are available and the completion of project is not delayed
It represents that a programme falls behind schedule and additional resources are required to complete the project in time

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Industrial Engineering and Production Management
The reasons which are basically responsible for the formation of a queue should be that

Output rate is linearly proportional to input
The average service rate Hess than the average arrival rate
Output rate is constant and the input varies in a random manner
All of these

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Industrial Engineering and Production Management
Pick up the incorrect statement from the following. A critical ratio scheduling

Establishes the relative priorities among various activities on a common basis
Adjusts automatically changes in activity progress
All of the these
Determines the status of each activity

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