Industrial Engineering and Production Management
Critical Path Net Work helps an engineer

To be cautious for avoiding any delay in the critical activities to avoid delay of the whole project
To divert the resources from noncritical advanced activities to critical activities
All of these
To concentrate his attention on critical activities

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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
Output rate is constant and the input varies in a random manner
Output rate is linearly proportional to input
All of these

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Industrial Engineering and Production Management
Time study is carried out

By finding all the significant informations regarding the job, work place and machine tool etc
All of these
By observing and recording the time taken by the operator for an operation
By breaking up each operation into small elements which are measurable with the help of the measuring device accurately

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