NFPA Exam CWBSP Topic 2 Question 3 Discussion

Actual exam question for NFPA's CWBSP exam

Question #: 3
Topic #: 2

[All CWBSP Questions]

A 4.2 K-factor sprinkler must deliver 17 gpm (692 mm/min). What pressure is required?

A4.52 psi (0.31 bar)

B9.22 psi (0.63 bar)

C16.38 psi (1.13 bar)

D36.86 psi (2.54 bar)

Show Suggested Answer

Suggested Answer: B

To deliver 17 gpm with a 4.2 K-factor sprinkler, approximately 9.22 psi pressure is required. This is calculated using the sprinkler's K-factor formula, which relates flow rate, pressure, and the K-factor.

by Ruthann at Nov 13, 2024, 08:05 PM

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Fernanda

6 months ago

A) 4.52 psi (0.31 bar) is the way to go. I can already feel the water pressure coursing through my veins. Bring on the next question!

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Sheridan

5 months ago

D) 36.86 psi (2.54 bar) would have been way too high for this scenario.

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Bettina

5 months ago

C) 16.38 psi (1.13 bar) seemed like a reasonable choice to me.

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Reyes

5 months ago

I think it's important to calculate the pressure accurately for sprinkler systems.

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Jaime

6 months ago

I agree, 4.52 psi (0.31 bar) is the correct pressure.

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Georgene

6 months ago

B) I thought it was 9.22 psi (0.63 bar), but I guess I was wrong.

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Aracelis

6 months ago

A) 4.52 psi (0.31 bar) is the correct answer. Good job!

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Cecily

7 months ago

Hmm, I'm gonna go with D) 36.86 psi (2.54 bar). Bigger is better, right? Just like my ego after acing this exam.

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Mattie

5 months ago

Josefa: I guess we'll find out soon enough.

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Michel

5 months ago

User 3: D) 36.86 psi (2.54 bar) seems like the right choice.

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Josefa

6 months ago

User 2: I'm going with A) 4.52 psi (0.31 bar).

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Nichelle

6 months ago

User 1: I think the answer is C) 16.38 psi (1.13 bar).

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Justine

7 months ago

I'm not sure, but I think I'll go with D) 36.86 psi (2.54 bar)

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Brande

7 months ago

I agree with Paris, because the formula for pressure is flow rate divided by K-factor

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Golda

7 months ago

I think B) 9.22 psi (0.63 bar) is the right answer. Gotta love these sprinkler questions, they really get the blood flowing!

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Yuriko

7 months ago

C) 16.38 psi (1.13 bar) seems like the correct answer. The K-factor and flow rate are given, so we can plug those into the formula to solve for the pressure.

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