Industrial Engineering and Production Management
The important file in making a PERT is

An event can't be accomplished until activities leading to it are completed
All of the these
Length of arrow has nothing to do with time
No activity from any event can be started from preceding event till it is completed

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Industrial Engineering and Production Management
Value engineering aims at finding out the

Break-even point when machine requires change
Depreciation value of a product
Resale value of a product
Major function of the item and accomplishing the same at least cost without change in quality

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

Output rate is linearly proportional to input
All of these
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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