시험패스에유효한최신버전CFPS최신버전덤프샘플문제시험대비자료

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DumpTOP의NFPA인증 CFPS시험대비 덤프는 가격이 착한데 비하면 품질이 너무 좋은 시험전 공부자료입니다. 시험문제적중율이 높아 패스율이 100%에 이르고 있습니다.다른 IT자격증에 관심이 있는 분들은 온라인서비스에 문의하여 덤프유무와 적중율등을 확인할수 있습니다. NFPA인증 CFPS덤프로 어려운 시험을 정복하여 IT업계 정상에 오릅시다.

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CFPS유효한 최신버전 덤프 & CFPS최신 업데이트버전 인증시험자료

NFPA인증 CFPS시험패스 공부방법을 찾고 있다면 제일 먼저DumpTOP를 추천해드리고 싶습니다. NFPA인증 CFPS시험이 많이 어렵다는것은 모두 알고 있는 것입니다. DumpTOP에서 출시한 NFPA인증 CFPS덤프는 실제시험을 대비하여 연구제작된 멋진 작품으로서 NFPA인증 CFPS시험적중율이 최고입니다. NFPA인증 CFPS시험패스를 원하신다면DumpTOP의 제품이 고객님의 소원을 들어줄것입니다.

최신 Fire Protection Specialist CFPS 무료샘플문제 (Q46-Q51):

질문 # 46
What is the maximum allowable sound pressure level (SPL) for a fire alarm system?

• A. 50 dBA
• B. 100 dBA
• C. 130 dBA
• D. 30 dBA

정답：B

설명：
Explanation
According to NFPA 72, the maximum sound pressure level (SPL) for a fire alarm system is 110 dBA at the minimum hearing distance from the audible appliance1.However, this limit can be exceeded if the sound pressure level measured 2 000 mm above floor level is not more than 100 dBA2. Sound pressure level is a measure of the intensity of sound at a given point in space, expressed in decibels (dB). The higher the SPL, the louder the sound.For comparison, a normal conversation is about 60 dB, a jet engine is about 140 dB, and a gunshot is about 160 dB3.References:Sound Pressure Levels - NFPA;NFPA fire alarm sound level - EntirelySafe.com;Subsection 907.5 - Occupantnotification systems - Casetext;How Loud Is a Fire Alarm In Decibels (dB)? With Noise Comparison Chart;The Ontario Building Code | Audibility of Alarm Systems.

질문 # 47
For wet-pipe automatic sprinkler systems, the only proper way to test the operation of a vane-type water flow alarm initiating device is to open the

• A. main (2 in. diameter) drain.
• B. alarm test by-pass valve at the system's main riser.
• C. valve at the inspector's test connection.
• D. check valve from the city connection.

정답：C

설명：
Explanation
valve at the inspector's test connection.
For wet-pipe automatic sprinkler systems, the only proper way to test the operation of a vane-type water flow alarm initiating device is to open the valve at the inspector's test connection. This is a small valve that is located at the end of a pipe that is connected to the sprinkler system, usually at the most remote or highest point. The inspector's test connection simulates the flow of a single sprinkler head and activates the vane-type water flow switch, which in turn triggers the fire alarm panel and the external alarm devices.Opening the valve at the inspector's test connection also allows the water to drain from the system, preventing corrosion and freezing1234 Opening the main (2 in. diameter) drain is not a proper way to test the operation of a vane-type water flow alarm initiating device, because it does not create enough flow to activate the switch. The main drain is used to drain the entire sprinkler system for maintenance or repair purposes, and it is usually located at the main riser or the fire department connection.Opening the main drain may also cause a pressure drop in the system, which could affect the performance of the sprinklers1234 Opening the alarm test by-pass valve at the system's main riser is not a proper way to test the operation of a vane-type water flow alarm initiating device, because it does not simulate the actual flow of a sprinkler head.
The alarm test by-pass valve is used to test the operation of the external alarm devices, such as the water motor gong or the electric bell, without activating the fire alarm panel. The alarm test by-pass valve is usually located near the alarm check valve or the water flow switch, and it allows water to flow through a small orifice to the alarm devices.Opening the alarm test by-pass valve does not create enough flow to activate the vane-type water flow switch1234 Opening the check valve from the city connection is not a proper way to test the operation of a vane-type water flow alarm initiating device, because it does not create any flow in the sprinkler system. The check valve from the city connection is used to prevent the backflow of water from the sprinkler system to the city water supply, and it is usually located at the fire department connection or the main riser.Opening the check valve from the city connection does not affect the water flow in the sprinkler system, and it does not activate the vane-type water flow switch1234 References:
Fire Sprinkler Flow Switch & Tamper Switch Inspection & Maintenance3
Sprinkler System Water Flow Device Testing - ORR Protection2
VSR-AT Auto-Test Waterflow Alarm Switch | Potter Electric4
WFDNA Series Vane-type Waterflow Detectors - Steel Fire Equipment5

질문 # 48
All of the following Road Tunnel fire model types are used EXCEPT

• A. zone models.
• B. two-dimensional models.
• C. one-dimensional models.
• D. field models.

정답：B

설명：
Explanation
Two-dimensional models are not a common type of road tunnel fire models. Most road tunnel fire models are either one-dimensional, zone, or field models. One-dimensional models use a simplified approach to describe the fire and smoke behavior along the tunnel axis, assuming uniform conditions across the tunnel cross-section. Zone models divide the tunnel into two or more zones, each with uniform properties, and apply mass and energy conservation equations to each zone. Field models use computational fluid dynamics (CFD) to solve the governing equations for mass, momentum, energy, and species transport in a three-dimensional grid, capturing the spatial and temporal variations of the fire and smoke phenomena. Two-dimensional models are rarely used for road tunnel fire simulations, as they cannot account for the complex three-dimensional effects of fire and ventilation in tunnels.
References:Design Fires in Road Tunnels | The National Academies Press;CFD Modelling of Fire Ventilation in Road Tunnels - Academia.edu;Findings of the International Road Tunnel Fire Detection Research ...1

질문 # 49
NFPA 25 requires initial testing of representative samples of fast response sprinklers after

• A. 5 years.
• B. 20 years.
• C. 10 years.
• D. 50 years.

정답：B

설명：
Explanation
20 years.
According to NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, 2020 edition, fast response sprinklers are those that have a response time index (RTI) of 50 (m s)

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