NFPA CWBSP Exam - Topic 3 Question 6 Discussion

Actual exam question for NFPA's CWBSP exam

Question #: 6
Topic #: 3

[All CWBSP Questions]

What K-factor would result with 65 gpm (246 lpm) flowing at 14.9 psi (1.03 bar)?

A8.0 (115)

B11.2 (160)

C16.8 (240)

D25.2 (360)

Show Suggested Answer

Suggested Answer: B

With 65 gpm flowing at 14.9 psi, a K-factor of approximately 11.2 (160) can be deduced using the K-factor formula, which relates flow, pressure, and the K-factor in sprinkler system calculations.

by Shoshana at Nov 18, 2024, 10:58 AM

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Caitlin

7 months ago

I thought it would be lower, maybe option A?

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Melodie

8 months ago

Wait, 65 gpm at 14.9 psi? That sounds off to me.

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Isabella

8 months ago

I'm leaning towards option C, but not entirely sure.

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Lewis

8 months ago

I think it's definitely option B, seems right to me!

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Junita

8 months ago

The K-factor is usually calculated based on flow rate and pressure.

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Aliza

9 months ago

I vaguely recall that higher flow rates usually mean higher K-factors, so maybe it's C or D, but I can't remember the specifics.

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Fatima

9 months ago

I feel like I might be mixing up the K-factor values. Wasn't there a formula we used that involved both gpm and psi?

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Hester

9 months ago

I practiced a similar question last week, and I think the K-factor was around 11 or 12 for similar flow rates. Maybe it's B?

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Frederica

9 months ago

I think I remember the K-factor being related to flow rate and pressure, but I'm not sure how to calculate it exactly for this question.

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Ashton

9 months ago

This seems straightforward enough. I'll work through it step-by-step and I'm confident I can get the right answer.

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Stephania

9 months ago

Wait, what's the K-factor again? I'm a little fuzzy on that concept. Maybe I should review my notes before trying to solve this.

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Rosita

9 months ago

No problem, I got this. The K-factor is just a function of the flow rate and pressure drop, so I'll crunch the numbers and pick the right answer.

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Alonso

9 months ago

Okay, I think I can do this. Let me just double-check the units and make sure I'm using the right formula.

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Honey

9 months ago

Hmm, this looks like a fluid mechanics problem. I'll need to remember the K-factor formula and plug in the given values to solve this.

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Dean

2 years ago

Ooh, this is a tricky one! I'm gonna have to go with my gut on this one and choose B) 11.2 (160). Sounds like a good middle-of-the-road option to me.

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Ricarda

2 years ago

I agree with you, B) 11.2 (160) seems like a solid choice.

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Tanja

2 years ago

I believe D) 25.2 (360) is the correct answer.

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Graciela

2 years ago

I'm leaning towards C) 16.8 (240) for this one.

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Christiane

2 years ago

I think I'll go with A) 8.0 (115) as my choice.

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Eura

2 years ago

Alright, time to put on my thinking cap. I'm gonna go with C) 16.8 (240) - it just feels right, you know? Plus, it's a nice round number, which is always a good sign.

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Mindy

2 years ago

I agree with you, C) 16.8 (240) does seem like the most logical choice.

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Jerrod

2 years ago

I'm going with B) 11.2 (160), it just feels like the correct answer to me.

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Rocco

2 years ago

I'm leaning towards D) 25.2 (360), it just seems like the right choice.

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Reynalda

2 years ago

I think I'll go with A) 8.0 (115), seems like a safe bet.

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Chaya

2 years ago

I'm not sure, I need to double check the calculations before making a decision.

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Tracey

2 years ago

I agree with Ariel, the flow rate and pressure values match up with option B.

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Angella

2 years ago

Haha, this question is a real brain-teaser! I'm just gonna go with D) 25.2 (360) and hope for the best. Who needs to understand the actual formula, anyway?

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