NFPA CFPE Exam - Topic 5 Question 21 Discussion

Actual exam question for NFPA's CFPE exam

Question #: 21
Topic #: 5

[All CFPE Questions]

Exhibit.

What does point "A" on the water supply graph represent?

AMaximum available water

BResidual pressure

COptimized pressure

DStatic pressure

Show Suggested Answer

Suggested Answer: D

Point 'A' on the water supply graph represents the static pressure. Static pressure is the pressure in the water supply system when no water is flowing. It is typically the highest pressure reading on the graph, measured before any hydrants are opened for testing or fire suppression activities. Understanding static pressure is crucial for designing fire protection systems and ensuring adequate water supply and pressure is maintained throughout the fire suppression operation as outlined in NFPA 13, Standard for the Installation of Sprinkler Systems.

Top of Form

Bottom of Form

by Joni at Nov 24, 2025, 07:38 PM

Limited Time Offer

25%

Off

Get Premium CFPE Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Mabel

1 day ago

I’m unsure, but D might be a good guess too.

upvoted 0 times

...

Reyes

6 days ago

I lean towards C. Optimized pressure sounds logical.

upvoted 0 times

...

Vannessa

11 days ago

B seems right to me. Residual pressure makes sense.

upvoted 0 times

...

Sheron

17 days ago

I feel like it could be D. Static pressure.

upvoted 0 times

...

Renea

22 days ago

I think it's A. Maximum available water.

upvoted 0 times

...

Hannah

27 days ago

I thought it was optimized pressure, but I guess I was wrong!

upvoted 0 times

...

Dustin

2 months ago

Nope, it's residual pressure, no doubt about it.

upvoted 0 times

...

Olive

2 months ago

Wait, are we sure it's not static pressure?

upvoted 0 times

...

Erick

2 months ago

Totally agree, it's definitely about max capacity!

upvoted 0 times

...

Cheryll

2 months ago

Point "A" shows the maximum available water.

upvoted 0 times

...

Brett

2 months ago

Haha, "maximum available water"? Sounds like something a water-obsessed superhero would say. But hey, it's the right answer!

upvoted 0 times

...

Talia

2 months ago

Residual pressure? Nah, that's not what the graph is showing. Gotta pay attention to the details, folks.

upvoted 0 times

...

Monte

3 months ago

Optimized pressure? Really? That's a bit of a stretch, don't you think?

upvoted 0 times

...

Ashley

3 months ago

I think it's the static pressure. That's the only option that makes sense to me.

upvoted 0 times

...

Blythe

3 months ago

I’m leaning towards optimized pressure for point "A," but I need to double-check my notes on that.

upvoted 0 times

...

Kara

3 months ago

I feel like we practiced a question where maximum available water was discussed, but I can't remember if that applies here.

upvoted 0 times

...

Lakeesha

3 months ago

I'm a bit confused by this question. The options don't seem super clear to me. I think I'll start by trying to understand what each of those terms means in the context of a water supply system, and then I'll try to match that to the graph.

upvoted 0 times

...

Latrice

3 months ago

This is a tricky one. I'm leaning towards C, optimized pressure, since that seems like the most logical option for a point on a water supply graph. But I'll double-check the other choices just to be sure.

upvoted 0 times

...

Estrella

4 months ago

Point A represents the maximum available water, which is the correct answer. Easy peasy!

upvoted 0 times

...

Sharee

4 months ago

I remember something about residual pressure being important, but I can't recall if that’s what point "A" indicates.

upvoted 0 times

...

Valentin

4 months ago

I think point "A" might represent static pressure, but I'm not entirely sure. We covered similar graphs in class.

upvoted 0 times

...

Skye

4 months ago

Alright, let me think this through step-by-step. The question is asking about a specific point on a water supply graph, and the options are talking about different water pressure concepts. I'm going to carefully review each option and compare it to what I can see in the graph to determine the best answer.

upvoted 0 times

...

Carolann

4 months ago

A is definitely the best choice. It fits the graph.

upvoted 0 times

...

Fausto

5 months ago

Okay, so we have a water supply graph with a point labeled A. I'm guessing it's either the residual pressure or the static pressure, but I'm not 100% confident. I'll have to review the definitions of those terms to decide.

upvoted 0 times

...

Xenia

5 months ago

Hmm, this looks like a water supply graph. I think point A might represent the maximum available water, but I'm not totally sure. I'll need to think this through carefully.

upvoted 0 times

...