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

All of these
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

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

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

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