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OMG-OCSMP-MBI300 Exam - Topic 7 Question 78 Discussion

Choose the correct answer.A system engineer has created the following model of a tank system composed of two tanks and a pipe connecting them:The system engineer wants to mathematically relate the flow of water through the pipe using the following mass conservation equation: Tank_System wFlowin flowRate * Tank_System pipe endA_Area = Tank_System wFlowOut flowRate * Tank_System pipe endB_Area How would the system engineer model this in SysML?
C) Create a constraint block to represent each of wFlowin wFlowOut and the mass conservation equation; use these constraint blocks In Tank_System. and relate their parameters to the properties of pipe.
A) Create a block to represent the mass conservation equation, use it in Tank_System. and relate its properties to the properties of wFlowin. wFlowOut. and pipe
B) Create a constraint block to represent the mass conservation equation, use it in Tank_System. and relate its parameters to the properties of wFiowin. wFlowOut. and pipe
D) Create two flow properties for Tank_System (equivalent to wFlowin and wFlowOut); create a constraint block for the mass conservation equation and use it in Tank_System. and then relate the flow properties to the new constraint property.
E) It is not possible to model this because wFlowin and wFlowOut are item properties and not flow properties

OMG-OCSMP-MBI300 Exam - Topic 7 Question 78 Discussion

Actual exam question for OMG's OMG-OCSMP-MBI300 exam
Question #: 78
Topic #: 7
[All OMG-OCSMP-MBI300 Questions]

Choose the correct answer.

A system engineer has created the following model of a tank system composed of two tanks and a pipe connecting them:

The system engineer wants to mathematically relate the flow of water through the pipe using the following mass conservation equation: Tank_System wFlowin flowRate * Tank_System pipe endA_Area = Tank_System wFlowOut flowRate * Tank_System pipe endB_Area How would the system engineer model this in SysML?

Show Suggested Answer Hide Answer
Suggested Answer: C

by Wava at Jan 05, 2026, 05:16 AM

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Lyla
2 months ago
I feel option C is overcomplicating things. Just one constraint block should suffice.
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Edelmira
2 months ago
Option A seems too simple. We need more detail in the model.
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Luke
2 months ago
I prefer option D. It directly relates flow properties to the constraint.
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Noel
2 months ago
I think option B is the best. It clearly defines the mass conservation equation.
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Lottie
2 months ago
Totally agree with B, it’s the most logical approach!
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Gilbert
3 months ago
A is too simplistic, it misses the constraints.
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Paz
3 months ago
Wait, is E really true? That sounds off.
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Hubert
3 months ago
I think D is the best choice, it covers all bases.
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Rikki
3 months ago
Option B seems right, constraint blocks are key here.
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Jame
3 months ago
Option A looks a bit too simple. I think we need a more robust approach to capture all the details.
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Sheron
3 months ago
I'm leaning towards option C. Separating the constraints for each flow seems more organized.
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Johnathon
4 months ago
Haha, option E is just ridiculous. Of course you can model this in SysML, it's not rocket science!
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Hayley
4 months ago
I'm not sure about that. Option D looks like it might be a better approach, with the flow properties and constraint block.
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Alyce
4 months ago
Option B seems like the way to go. Constraint blocks are perfect for modeling equations like this.
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Janine
5 months ago
I feel like creating two flow properties and then a constraint block for the mass conservation equation could be the right approach, but I can't recall if that's how we did it in practice.
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Helene
5 months ago
I'm a bit confused about whether wFlowin and wFlowOut are considered flow properties or item properties. I think that might affect which option is correct.
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Helaine
5 months ago
I remember practicing a similar question where we had to relate flow properties in SysML. I feel like option B makes the most sense for this one.
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Herminia
5 months ago
I think the mass conservation equation should be modeled as a constraint block, but I'm not sure if it should be related to wFlowin and wFlowOut directly.
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Gianna
5 months ago
This seems straightforward enough. I think option B is the way to go - create a constraint block for the mass conservation equation and relate it to the system properties. That way, I can clearly capture the mathematical relationship between the flow rates and pipe areas.
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Novella
6 months ago
I'm not totally sure about this one. The question seems a bit tricky, and I'm not 100% confident in my understanding of how to model this type of system in SysML. I might need to do some quick review of SysML constraint blocks before answering.
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Percy
6 months ago
Okay, I think I've got this. The key is to recognize that the mass conservation equation is a constraint that needs to be modeled in SysML. Option B seems like the best approach, since it allows me to create a dedicated constraint block and relate it to the relevant system properties.
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Tequila
6 months ago
Hmm, I'm a bit confused by the wording of the question. It's not totally clear to me how the mass conservation equation relates to the properties of the system. I might need to re-read the question a few times to make sure I understand it properly.
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Lili
6 months ago
This looks like a pretty straightforward SysML modeling question. I think I'll go with option B - create a constraint block to represent the mass conservation equation and relate its parameters to the properties of the system.
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Alethea
1 day ago
Yeah, constraint blocks are essential for this kind of modeling.
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Nathan
2 months ago
I agree, option B seems the most logical.
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