Industrial Engineering and Production Management
Which of the following statement is correct about the network diagram?

The head of the arrow represents the end of an activity.
The tail end of the arrow represents the start of an activity.
All of the these
The events are represented graphically by circles or nodes at the beginning and the end of activity by arrows.

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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
Each activity is represented by one and only one arrow in the network
Dangling must be avoided in a network diagram
All of the these

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Industrial Engineering and Production Management
In queuing theory, the nature of the waiting situation can be studied and analysed mathematically if

All variables and constants are known and form a linear equation
Arrival and waiting times are known and can be grouped to form a waiting line model
Complete details of items in, waiting line are known
The laws governing arrivals, service times, and the order in which the arriving units are taken into source are known

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