Pert and cpm are different in the fact pert is probabilistic; while cpm is deterministic.

Consider the following statements in respect of PERT and CPM:
1. PERT is event-oriented while CPM is activity-oriented.
2. PERT is probabilistic while CPM is deterministic.
3. Levelling and smoothing are the techniques related to resource scheduling in CPM.
Which of the statements given above are correct?

1, 2 and 3
1 and 2 only
2 and 3 only
1 and 3 only

Answer [Detailed Solution Below]

Option 1 : 1, 2 and 3

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Explanation:

A project may be defined as a combination of interrelated activities which must be executed in a certain order before the entire task can be completed.

The aim of planning is to develop a sequence of activities of the project so that the project completion time and cost are properly balanced.

To meet the objective of systematic planning, the management has evolved several techniques applying network strategy.

PERT [Programme Evaluation and Review Technique] and CPM [Critical Path Method] are network techniques which have been widely used for planning, scheduling and controlling the large and complex projects.

PERT [Project Evaluation and Review Technique] approach takes account of the uncertainties. In this approach, 3-time values are associated which each activity. So it is probabilistic.

CPM [Critical Path Method] involves the critical path which is the largest path in the network from starting to ending event and defines the minimum time required to complete the project. So it is deterministic.

Difference between PERT and CPM [Critical Path Method]

PERT	CPM
1. Probabilistic approach	1. Deterministic approach
2. Three-time estimate	2. One - time estimate
3. Event oriented network model	3. Activity-oriented network model
4. The slack concept is used	4. Float concept is used
5. Project crashing is not possible	5. Project crashing is possible
6. Deals with probabilistic time estimates	6. Deals with deterministic time estimates

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8. CPM is the

Time oriented technique
Event oriented technique
Target oriented technique
Activity oriented technique

10. What is difference between PERT and CPM?

PERT is a probabilistic model while CPM is a deterministic model
PERT is an event-oriented technique while CPM is an activity-oriented technique
PERT is Project Evaluation and Review Technique while CPM is Critical Path Method
All of the above

11. The earliest start time rule

Directs when a project can start
Regulates when a project must begin
Compares the activities end time for an activity predecessor
Compares the activities starting time for an activity successor

24. with respect to pert and cpm, slack ...............

marks the start or completion of a task.
is a task or subproject that must be completed.
is the latest time an activity can be started without delaying the entire project.
is the amount of time a task may be delayed without changing the overall project completion time.

28. Which of the following is a limitation of pert and cpm?

They can be used only to monitor schedules
There is the inherent danger of placing too much emphasis on the critical path.
They are applicable to only a narrow variety of projects and industries
The graphical nature of a network delays comprehension of the activity list's interrelatiomships

What is the main difference between PERT CPM and PERT?

PERT vs CPM.

What is the difference between PERT and CPM Mcq?

PERT is probabilistic and CPM is deterministic. In PERT, events are used and, in CPM activities are used. In CPM, crashing is carried out. In CPM, the probability to complete the project in a given duration is calculated.

What is the biggest difference between a PERT chart and a CPM chart?

The number of time estimates is the biggest difference between the CPM and PERT diagrams. The PERT has an optimistic time, a pessimistic time, and a most likely time. In addition, the PERT diagram has the time estimates on the arrow vice the node as in the CPM diagram.

Which of the following statement is true CPM is deterministic?

Whereas CPM involves the critical path which is the largest path in the network from starting to ending event and defines the minimum time required to complete the project. So it is deterministic.