Industrial Engineering and Production Management
The salient feature of functional organisation is

All of these
Each individual maintains functional efficiency
Strict adherence to specification
Separation of planning and design part

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

It represents that a programme falls behind schedule and additional resources are required to complete the project in time
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
Any one of the above

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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

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
All variables and constants are known and form a linear equation
The laws governing arrivals, service times, and the order in which the arriving units are taken into source are known

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