You are reading about which of the following is true of dummy activities?. Here are the best content from the team C0 thuy son tnhp synthesized and compiled from many sources, see more in the category How To.
Quantitative Techniques: Theory and Problems [Book] [1]
Dummy activity is a hypothetical activity which requires zero time and zero resources for completion. Dummy arrow represents an activity with zero duration
– It is created to make activities with common starting and finishing events distinguishable, and. – To identify and maintain the proper precedence relationship between activities that are not connected by events.
Such a situation can be handled by use of a dummy activity as follows:. Avoiding duplication of designation – In the figure …
Dummy Activity in Network Analysis [2]
A Dummy activity is a type of operation in a project network which neither requires any time nor any resource. It is an imaginary activity shown in a project network to identify the dependence among operation.
Dummy activity forms a connecting link for control purpose or for maintaining the uniqueness of the activity. A dummy activity is used to maintain the network logic and to avoid ambiguity.
A dummy activity can be either critical or non-critical. It becomes a critical activity when the earlier start time and the latest finish time are equal.
Using dummy activities [3]
When two paths within a network have a common event although they are, in other respects independent, a logical error such as that illustrated in Figure 6.13 might occur.. Suppose that, in a particular project, it is necessary to specify a certain piece of hardware before placing an order for it and before coding the software
Figure 6.13 is an attempt to model the situation described above, although it is incorrect in that it requires both hardware specification and data structure design to be completed before either an order may be placed or software coding may commence.. We can resolve this problem by separating the two (more or less) independent paths and introducing a dummy activity to link the completion of data structure design to the start of the activity placing an order
Dummy activities, shown as dotted lines an the network diagram, have a zero duration and use no resources. They are often used to aid in the layout of network drawings as in Figure 6.15
[Solved] Which of the following is a dummy activity? [4]
Dummy activity: It is an activity which has zero duration and is created for the sole purpose of establishing the relationship between two activities. Excavate the foundations: This will be an internal activity (a part of project which requires some duration and cost as well to reach the tail event.
Lay the foundation concrete: This is the second stage after the excavation which will require money and time hence not a dummy activity. Cure the foundation concrete: This is the third stage after the lay of concrete which requires minimum 7 days of curing and manpower & resource cost.
Candidates had already applied from 21st March 2023 to 20th April 2023. Candidates with Diploma in Engineering are eligible to apply for the examination
What is Dummy activity? [5]
Even though there may not be any actual activity between two events when relationships are being established, and network diagrams are being drawn, an event cannot be regarded to have occurred until and until another event has also occurred. On the network diagram, such instances are represented as dummy activities
The following is a picture of how dummy activity is symbolized:. The dotted lines indicate the dummy activity, which is between the numbers 2 and 3.
A dummy activity is a dotted-line activity with no duration that demonstrates independence. As per the Dummy activity characteristics, all of the above options is correct.
06-Time Management Flashcards by amit shah [6]
To control the schedule, a project manager is reanalyzing the project to predict project duration. She does this by analysing the sequence of activities with the least amount of scheduling flexibility
Precedence diagramming, however, is a diagramming technique that deals with the relationship between activities, not schedule flexibility. The project manager is analyzing the critical path.
Explanation No mention is made that the dependency comes from a source outside the project, so this is not an external dependency. The key word in the question is “requiring.” Since the dependency is required, it could not be discretionary and therefore must be mandatory
Dummy Activities [7]
Sometimes, two activities have the same immediate predecessor and one that might not be the same. A dummy activity is required if two activities share some
The following video introduces the concept of Dummy Activities.. The following videos complete exam-style questions.
Network analysis [8]
OR-Notes are a series of introductory notes on topics that fall under the broad heading of the field of operations research (OR). They were originally used by me in an introductory OR course I give at Imperial College
A full list of the topics available in OR-Notes can be found here.. To remind you of the problem we considered before it was a small project that consisted of 11 activities (as below):
with the following list of immediate precedence relationships:. Activity Activity number number 1 must be finished before 3 can start 2 4 3 5 4 6 5,6 7 7 8 8 9 8 10 9,10 11
MGT613 Solved MCQs from Book chapter 6 [9]
c) a node does not actually connect to another node. d) when two activities share the same starting and ending node
Dummy activities are especially necessary when the network is analyzed by computer since the computer would not be able to tell the two activities apart if they have the same starting and ending nodes.}. b) the amount of slack that an activity has in common with another activity.
{Text on page 230: There is an important distinction between activity slack and shared slack. Activity slack is the amount of time an activity can be delayed without delaying the entire project
Quantitative Techniques: Theory and Problems [Book] [10]
Dummy activity is a hypothetical activity which requires zero time and zero resources for completion. Dummy arrow represents an activity with zero duration
– It is created to make activities with common starting and finishing events distinguishable, and. – To identify and maintain the proper precedence relationship between activities that are not connected by events.
Such a situation can be handled by use of a dummy activity as follows:. Avoiding duplication of designation – In the figure …
A dummy activity in a net work diagram [11]
Solution(By Examveda Team)Dummy activities often have a zero completion time and are used to represent precedence relationships that cannot be easily represented using the actual activities involved in the project.. By convention dummies are always shown as dotted arcs in network diagrams.
The project time should change due to decompression. After decompression the time of an activity invariably exceeds its normal time
According to MAPI formula, the old machine should be replaced by new one when. (Here, CAM = Challenger’s Adverse minimum, DAM = Defender’s Adverse minimum)
Dummy Activity in Network Analysis [12]
A Dummy activity is a type of operation in a project network which neither requires any time nor any resource. It is an imaginary activity shown in a project network to identify the dependence among operation.
Dummy activity forms a connecting link for control purpose or for maintaining the uniqueness of the activity. A dummy activity is used to maintain the network logic and to avoid ambiguity.
A dummy activity can be either critical or non-critical. It becomes a critical activity when the earlier start time and the latest finish time are equal.
Sources
- https://www.oreilly.com/library/view/quantitative-techniques-theory/9789332512085/xhtml/ch6sec9.xhtml#:~:text=Dummy%20activity%20is%20a%20hypothetical,an%20activity%20with%20zero%20duration.
- https://theconstructor.org/construction/dummy-activity-network-analysis/31502/#:~:text=Features%20of%20Dummy%20Activity,-Dummy%20activity%20forms&text=An%20activity%20followed%20by%20a,latest%20finish%20time%20are%20equal.
- https://www.gristprojectmanagement.us/software-2/using-dummy-activities.html#:~:text=Dummy%20activities%20are%20used%20to,which%20don’t%20actually%20exist.
- https://testbook.com/question-answer/which-of-the-following-is-a-dummy-activity–5e73a4daf60d5d1ae1047196
- https://byjusexamprep.com/what-is-dummy-activity-i
- https://www.brainscape.com/flashcards/06-time-management-5551864/packs/8339667
- https://artofsmart.com.au/hsctogether/dummy-activities/
- http://people.brunel.ac.uk/~mastjjb/jeb/or/netaoa.html
- https://www.vuzs.info/mcqs/231-mgt613-production-operations-management/2967-mgt613-solved-mcqs-from-book-chapter-6.html
- https://www.oreilly.com/library/view/quantitative-techniques-theory/9789332512085/xhtml/ch6sec9.xhtml
- https://www.examveda.com/a-dummy-activity-in-a-net-work-diagram-60104/
- https://theconstructor.org/construction/dummy-activity-network-analysis/31502/
