Industrial Engineering and Production Management
The correct sequence of phases in value engineering is

Information phase, creative phase, investigation phase, evaluation phase
Creative phase, information phase, investigation phase, evaluation phase
Investigation phase, information phase, creative phase, evaluation phase
Creative phase, investigation phase, evaluation phase, information phase

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

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

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