NFPA CWBSP Exam Practice Test Instant Access

Question 1

How much pressure is lost to friction as 1,200 gpm (4542 L/min) travels through 200 ft (61 m) of 5 in. (130 mm) schedule 40 steel pipe with a C-factor of 120?

A28 psi (1.9 bar)

B24 psi (1.65 bar)

C21 psi (1.45 bar)

D19 psi (1.31 bar)

Answer : C

The pressure loss due to friction for 1,200 gpm traveling through 200 ft of 5 in. schedule 40 steel pipe with a C-factor of 120 is approximately 21 psi (1.45 bar). This calculation takes into account the flow rate, pipe length, diameter, and roughness factor.

Question 2

What is the minimum temperature rating of ceiling sprinklers in roll paper stored at 15 ft. (4.6 m) or less?

A100F (38C)

B135F (57C)

C150F (66)

D175F (79)

Answer : C

The minimum temperature rating for ceiling sprinklers in roll paper storage areas that are 15 ft or less in height is typically 150F (66C). This rating is selected to provide a buffer between the ambient temperature conditions and the activation temperature of the sprinklers, preventing accidental activation.

Question 3

A restaurant service area has an 18 ft (5.5 m) high T-Bar ceiling throughout. Using quick-response sprinklers in a wet

sprinkler system, what is the minimum area and density that should be calculated?

A0.10 gpm/900 ft2 (4.1 mm/min over 84 m2)

B0.10 gpm/1,080 ft2 (4.1 mm/min over 100.3 m2)

C0.15 gpm/900 ft2 (6.1 mm/min over 84 m2)

D0.15 gpm/1,080 ft2 (6.1 mm/min over 100.3 m2)

Answer : D

In a restaurant service area with an 18 ft high T-Bar ceiling and using quick-response sprinklers in a wet system, the minimum area and density that should be calculated is typically 0.15 gpm over 1,080 ft (6.1 mm/min over 100.3 m), considering the ceiling height and occupancy.

Question 4

What is the maximum pressure rating when using standard weight pattern malleable iron fittings that are 6 in. (150 mm) in size and smaller?

A175 psi (12 bar)

B200 psi (14 bar)

C300 psi (21 bar)

D400 psi (28 bar)

Answer : C

Standard weight pattern malleable iron fittings that are 6 inches in size and smaller typically have a maximum pressure rating of 300 psi (21 bar). This rating ensures that the fittings can withstand the pressure demands of most fire sprinkler systems without failure.

Question 5

Where must a diesel engine driven fire pump's fuel tank be located for areas subject to temperatures below 32F (0)?

AThe same room as the fire pump.

BThe exterior of the building.

CThe room next to the fire pump room.

DThe room below the fire pump.

Answer : A

The fuel tank for a diesel engine-driven fire pump must be located in the same room as the fire pump, especially in areas subject to freezing temperatures, to ensure that the diesel fuel remains at a usable temperature and the pump is readily available for operation during an emergency.

Question 6

When designing an early suppression fast-response (ESFR) fire sprinkler system, what shall the design area of the most hydraulically demanding area consist of?

A960 ft2

B1200 ft2

C12 sprinklers

D14 sprinklers

Answer : C

Question 7

A 4 in. (102 mm) nominal diameter Schedule 10 sprinkler main is to be supported from the structure utilizing a trapeze

hanger with a span of 8 ft (2.4 m). Using Schedule 40 pipe for the trapeze hanger, what is the minimum diameter pipe

that should be used?

A1.5 in. (40 mm)

B2 in. (50 mm)

C2.5 in. (65 mm)

D3 in. (75 mm)

Answer : B

For supporting a 4 in. Schedule 10 sprinkler main with a trapeze hanger spanning 8 ft, a Schedule 40 pipe of at least 2 in. in diameter is typically recommended. This size provides adequate strength for the span and weight of the sprinkler main.

NFPA Certified Water-Based Systems Professionals Exam Practice Test