3B Fire Protection General 3C Fire Protection Practice Exam | 100 Q&A | Detailed
Explanations
Subject/Course: Fire Protection Systems, Sprinkler Systems, Fire Pumps,
Hydraulics, Codes and Standards
Tags: California Fire Protection, 3B License, 3C License, NFPA, Fire Sprinklers,
Standpipe Systems, Fire Pumps, Hydraulic Calculations, Plan Review
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EXAM QUESTIONS
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1. According to NFPA 13, what is the minimum pipe size for sprinkler system
risers?
A. 1 inch
B. 1-1/4 inch
C. 1-1/2 inch
D. 2 inch
Answer: D
Explanation: NFPA 13 requires minimum 2-inch pipe for sprinkler system risers
to ensure adequate water supply.
2. What is the maximum spacing for standard spray upright sprinklers in light
hazard occupancy?
, A. 12 feet
B. 15 feet
C. 18 feet
D. 20 feet
Answer: B
Explanation: NFPA 13 allows maximum 15-foot spacing between standard spray
sprinklers in light hazard areas.
3. According to NFPA 20, what is the minimum duration for fire pump water
supply tanks?
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes
Answer: B
Explanation: NFPA 20 requires water supply tanks to provide minimum 60
minutes of pump operation at 150% rated capacity.
4. What type of sprinkler system has water in pipes at all times?
A. Wet pipe
B. Dry pipe
C. Pre-action
D. Deluge
, Answer: A
Explanation: Wet pipe systems are always charged with water, ready for
immediate operation.
5. According to California regulations, what license is required to install fire
protection systems?
A. C-16 Fire Protection
B. C-36 Plumbing
C. C-10 Electrical
D. C-20 HVAC
Answer: A
Explanation: C-16 Fire Protection license is required in California for fire
sprinkler installation.
6. What is the minimum residual pressure required at the highest sprinkler in a
system?
A. 7 psi
B. 15 psi
C. 30 psi
D. 50 psi
Answer: A
Explanation: NFPA 13 requires minimum 7 psi residual pressure at the most
remote sprinkler.
, 7. According to NFPA 14, what class of standpipe system has 2-1/2 inch hose
connections only?
A. Class I
B. Class II
C. Class III
D. Class IV
Answer: A
Explanation: Class I standpipes have 2-1/2 inch hose connections for fire
department use.
8. What is the purpose of a retard chamber in a dry pipe system?
A. Delay system operation
B. Prevent false trips
C. Drain condensation
D. All of the above
Answer: B
Explanation: Retard chambers prevent false trips from minor pressure
fluctuations.
9. According to NFPA 13, what is the maximum floor area protected by one
sprinkler?
A. 100 sq ft
B. 130 sq ft
Explanations
Subject/Course: Fire Protection Systems, Sprinkler Systems, Fire Pumps,
Hydraulics, Codes and Standards
Tags: California Fire Protection, 3B License, 3C License, NFPA, Fire Sprinklers,
Standpipe Systems, Fire Pumps, Hydraulic Calculations, Plan Review
===================================================================
=================
EXAM QUESTIONS
===================================================================
=================
1. According to NFPA 13, what is the minimum pipe size for sprinkler system
risers?
A. 1 inch
B. 1-1/4 inch
C. 1-1/2 inch
D. 2 inch
Answer: D
Explanation: NFPA 13 requires minimum 2-inch pipe for sprinkler system risers
to ensure adequate water supply.
2. What is the maximum spacing for standard spray upright sprinklers in light
hazard occupancy?
, A. 12 feet
B. 15 feet
C. 18 feet
D. 20 feet
Answer: B
Explanation: NFPA 13 allows maximum 15-foot spacing between standard spray
sprinklers in light hazard areas.
3. According to NFPA 20, what is the minimum duration for fire pump water
supply tanks?
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes
Answer: B
Explanation: NFPA 20 requires water supply tanks to provide minimum 60
minutes of pump operation at 150% rated capacity.
4. What type of sprinkler system has water in pipes at all times?
A. Wet pipe
B. Dry pipe
C. Pre-action
D. Deluge
, Answer: A
Explanation: Wet pipe systems are always charged with water, ready for
immediate operation.
5. According to California regulations, what license is required to install fire
protection systems?
A. C-16 Fire Protection
B. C-36 Plumbing
C. C-10 Electrical
D. C-20 HVAC
Answer: A
Explanation: C-16 Fire Protection license is required in California for fire
sprinkler installation.
6. What is the minimum residual pressure required at the highest sprinkler in a
system?
A. 7 psi
B. 15 psi
C. 30 psi
D. 50 psi
Answer: A
Explanation: NFPA 13 requires minimum 7 psi residual pressure at the most
remote sprinkler.
, 7. According to NFPA 14, what class of standpipe system has 2-1/2 inch hose
connections only?
A. Class I
B. Class II
C. Class III
D. Class IV
Answer: A
Explanation: Class I standpipes have 2-1/2 inch hose connections for fire
department use.
8. What is the purpose of a retard chamber in a dry pipe system?
A. Delay system operation
B. Prevent false trips
C. Drain condensation
D. All of the above
Answer: B
Explanation: Retard chambers prevent false trips from minor pressure
fluctuations.
9. According to NFPA 13, what is the maximum floor area protected by one
sprinkler?
A. 100 sq ft
B. 130 sq ft
