Industrial Engineering and Production Management
Activity slack or float of any event on a PERT/CPM chart is represented by

Anyone of the above
Latest start time of the event earliest start time of the event
Latest start time of succeeding event earliest finish time of preceding event activity time
Latest finish time of event earliest finish time of the event

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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
The laws governing arrivals, service times, and the order in which the arriving units are taken into source are known
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

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

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

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