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Importance of Organising

Consider the ...

Question

Consider the following statements with respect to PERT and CPM
1. PERT is a probabilistic approach and it is well suited for R&D
2. Project crashing is possible in a PERT network if cost elements are provided.
3. Critical path duration will be the minimum time required to complete the project in a CPM network.

Which of the above statements is/are correct?

A

1, 2 and 3

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B

1 and 3

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C

2 and 3

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D

1 and 2

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Solution

The correct option is B 1 and 3
In PERT network, project crashing is not possible

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Similar questions

Q. A PERT network has three activities on critical path with mean time 3, 8 and 6 and standard deviation 1, 2 and 2 respectively. The probability that the project will be completed in 20 days is

Q. Consider a PERT network for a project involving six tasks (a to f)

Task	Predecessor	Expected task time (in days)	Variance of the task time (in days $^{2}$ )
a	-	30	25
b	a	40	64
c	a	60	81
d	b	25	9
e	b, c	45	36
f	d, e	20	9

The standard deviation of the critical path of the project is

Q. Consider a PERT network as given below:

The expected activity time is as shown in network above. The probability of completion of above project in 24 days is 95%. Calculate the expected activity time for activity 2 - 3, if standard deviation for project is 2.5.

P(%)	90	94	97
z	1.3	1.5	1.8

Q. Consider the following statements regarding PERT
1. In PERT, each activity is assumed to follow

β

distribution curve of time
2. Wider range in time estimates represents greater uncertainty
Which of the above statements are CORRECT ?

Q. Activities A, B, C and D from the critical path for a project with a PERT network. The means and variances of the activity duration for each activity are given below. All activity durations follow the Gaussian (normal) distribution, and are independent of each other.

Activity	A	B	C	D
Mean (days)	6	11	8	15
Variance (days $^{2}$ )	4	9	4	9

The probability that the project will be completed within 40 days is ____. [Round off to two decimal places]

[Note: Probability is a number between 0 and 1]

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