Question 1

In PERT analysis,the identification of the critical path can be incorrect if a noncritical activity takes substantially more than its expected time.

Accepted Answer

A) True 
 B)False

Question 2

The critical path can be determined by use of either the "forward pass" or the "backward pass."

Accepted Answer

A) True 
 B)False

Question 3

In a PERT network,non-critical activities that have little slack need to be monitored closely:

Accepted Answer

A) because PERT treats all activities as equally important. 
B) because near-critical paths could become critical paths with small delays in these activities. 
C) because slack is undesirable and needs to be eliminated. 
D) because they are causing the entire project to be delayed. 
E) because they have a high risk of not being completed. 
A) because PERT treats all activities as equally important. 
B) because near-critical paths could become critical paths with small delays in these activities. 
C) because slack is undesirable and needs to be eliminated. 
D) because they are causing the entire project to be delayed. 
E) because they have a high risk of not being completed.

Question 4

How is the expected completion time of a project activity,and of a PERT project,computed?

Accepted Answer

The expected completion time of a projec

Question 5

Every network has at least one critical path.

Accepted Answer

A) True 
 B)False

Question 6

The network below represents a project being analyzed by the critical path method.Activity durations are indicated on the network.   a.Identify the activities on the critical path.
b.What is the duration of the critical path?
c.Calculate the amount of slack time at activity H.
d.If activity I were delayed by ten time units,what would be the impact on the project duration?

Accepted Answer

(a)Critical activities are A-C

Question 7

Consider the network described in the table below.
   a.Calculate the expected duration of each activity.
b.Calculate the expected duration and variance of the critical path.
c.Calculate the probability that the project will be completed in fewer than 30 time units.

Accepted Answer

(a)See table below.(b)Tasks J-M-N-P are

Question 8

A contractor's project being analyzed by PERT has an estimated time for the critical path of 120 days.The sum of all activity variances is 81;the sum of variances along the critical path is 64.What is the probability that the project will take 130 or more days to complete?

Accepted Answer

A) 0.1057 
B) 0.1335 
C) 0.8512 
D) 0.8943 
E) 1.29 
A) 0.1057 
B) 0.1335 
C) 0.8512 
D) 0.8943 
E) 1.29

Question 9

A project organization that becomes permanent is often referred to as a:

Accepted Answer

A) fixed project organization. 
B) matrix organization. 
C) normal organization. 
D) standard organization. 
E) permanent project organization. 
A) fixed project organization. 
B) matrix organization. 
C) normal organization. 
D) standard organization. 
E) permanent project organization.

Question 10

The expected activity time in PERT analysis is calculated as:

Accepted Answer

A) the simple average of the optimistic,pessimistic,and most likely times. 
B) the weighted average of a,m,and b,with m weighted 4 times as heavily as a and b. 
C) the sum of the optimistic,pessimistic,and most likely times. 
D) the sum of the optimistic,pessimistic,and most likely times,divided by six. 
E) the sum of the activity variances,divided by six. 
A) the simple average of the optimistic,pessimistic,and most likely times. 
B) the weighted average of a,m,and b,with m weighted 4 times as heavily as a and b. 
C) the sum of the optimistic,pessimistic,and most likely times. 
D) the sum of the optimistic,pessimistic,and most likely times,divided by six. 
E) the sum of the activity variances,divided by six.

Question 11

The network below represents a project being analyzed by the critical path method.Activity durations are A=5,B=2,C=12,D=3,E=5,F=1,G=7,H=2,I=10,and J=6.   a.What task must be on the critical path,regardless of activity durations?
b.What is the duration of path A-B-E-H-J?
c.What is the critical path of this network?
d.What is the length of the critical path?
e.What is slack time at activity H?
f.What is the Late Finish of activity H?
g.If activity C were delayed by two time units,what would happen to the project duration?

Accepted Answer

(a)J; (b)20; (c)A-B-

Question 12

The ________ distribution is used by PERT analysis to calculate expected activity times and variances.

Accepted Answer

A) Normal 
B) Beta 
C) Alpha 
D) Gaussian 
E) Binomial 
A) Normal 
B) Beta 
C) Alpha 
D) Gaussian 
E) Binomial

Question 13

Which of the following statements regarding Gantt charts is true?

Accepted Answer

A) Gantt charts give a timeline and precedence relationships for each activity of a project. 
B) Gantt charts use the four standard spines of Methods,Materials,Manpower,and Machinery. 
C) Gantt charts are visual devices that show the duration of activities in a project. 
D) Gantt charts are expensive. 
E) All of the above are true. 
A) Gantt charts give a timeline and precedence relationships for each activity of a project. 
B) Gantt charts use the four standard spines of Methods,Materials,Manpower,and Machinery. 
C) Gantt charts are visual devices that show the duration of activities in a project. 
D) Gantt charts are expensive. 
E) All of the above are true.

Question 14

PERT calculations typically include the duration variance of each activity.What is the purpose of this calculation,i.e.what's the role of variances in PERT analysis?

Accepted Answer

The activity variances influence the pro

Question 15

Which of the following statements regarding critical paths is true?

Accepted Answer

A) The shortest of all paths through the network is the critical path. 
B) Some activities on the critical path may have slack. 
C) Every network has only one critical path. 
D) On a specific project,there can be multiple critical paths,all with exactly the same duration. 
E) The duration of the critical path is the average duration of all paths in the project network. 
A) The shortest of all paths through the network is the critical path. 
B) Some activities on the critical path may have slack. 
C) Every network has only one critical path. 
D) On a specific project,there can be multiple critical paths,all with exactly the same duration. 
E) The duration of the critical path is the average duration of all paths in the project network.

Question 16

Which of these statements regarding time-cost tradeoffs in CPM networks is true?

Accepted Answer

A) Crashing is not possible unless there are multiple critical paths. 
B) Crashing a project often reduces the length of long-duration,but noncritical,activities. 
C) Activities not on the critical path can never be on the critical path,even after crashing. 
D) Crashing shortens the project duration by assigning more resources to one or more of the critical tasks. 
E) The crash time always exceeds the normal time. 
A) Crashing is not possible unless there are multiple critical paths. 
B) Crashing a project often reduces the length of long-duration,but noncritical,activities. 
C) Activities not on the critical path can never be on the critical path,even after crashing. 
D) Crashing shortens the project duration by assigning more resources to one or more of the critical tasks. 
E) The crash time always exceeds the normal time.

Question 17

Given the project within the table below,calculate the following:
a.The critical path
b.The minimum project duration
c.The amount of slack for each activity

Accepted Answer

@#IMG-DLM& (A)The critical path is CDEFG
(B)Minimu

Question 18

Analysis of a PERT problem shows the estimated time for the critical path to be 108 days with a variance of 64.There is a .90 probability that the project will be completed before approximately day:

Accepted Answer

A) 98. 
B) 108. 
C) 109. 
D) 115. 
E) 118. 
A) 98. 
B) 108. 
C) 109. 
D) 115. 
E) 118.

Question 19

Identify the responsibilities of project managers.

Accepted Answer

Project managers are directly responsibl

Question 20

What are the three phases of a project? Describe each in a sentence or two.

Accepted Answer

The three phases are planning,scheduling

Exam 3: Managing Projects

In PERT analysis,the identification of the critical path can be incorrect if a noncritical activity takes substantially more than its expected time.

The critical path can be determined by use of either the "forward pass" or the "backward pass."

In a PERT network,non-critical activities that have little slack need to be monitored closely:

How is the expected completion time of a project activity,and of a PERT project,computed?

Every network has at least one critical path.

Consider the network described in the table below. a.Calculate the expected duration of each activity. b.Calculate the expected duration and variance of the critical path. c.Calculate the probability that the project will be completed in fewer than 30 time units.

A contractor's project being analyzed by PERT has an estimated time for the critical path of 120 days.The sum of all activity variances is 81;the sum of variances along the critical path is 64.What is the probability that the project will take 130 or more days to complete?

A project organization that becomes permanent is often referred to as a:

The expected activity time in PERT analysis is calculated as:

The ________ distribution is used by PERT analysis to calculate expected activity times and variances.

Which of the following statements regarding Gantt charts is true?

PERT calculations typically include the duration variance of each activity.What is the purpose of this calculation,i.e.what's the role of variances in PERT analysis?

Which of the following statements regarding critical paths is true?

Which of these statements regarding time-cost tradeoffs in CPM networks is true?

Given the project within the table below,calculate the following: a.The critical path b.The minimum project duration c.The amount of slack for each activity

Analysis of a PERT problem shows the estimated time for the critical path to be 108 days with a variance of 64.There is a .90 probability that the project will be completed before approximately day:

Identify the responsibilities of project managers.

What are the three phases of a project? Describe each in a sentence or two.

Operations and Productivity

The Global Environment and Operations Strategy

Forecasting Demand

Product Design

Quality Management and International Standards

Process Design

Location Decisions

Layout Decisions

Job Design and Work Measurement

Supply Chain Management

Managing Inventory

Aggregate Scheduling

Material Requirements Planning Mrpand Erp

Scheduling for the Short-Term

Jit,lean Operations,and the Toyota Production System

Maintenance and Reliability Decisions

Sustainability

Statistical Process Control

Capacity Planning

Supply Chain Modeling

Decision Modeling

Linear Programming Models

Transportation Modeling

Queuing Models

Learning Curves

Modeling with Simulation

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