G35-N G35 - Class DF Fire Suppression Installation Contractor
1. What is the primary purpose of a fire suppression system?
A. To prevent fire from starting
B. To detect fire early
C. To control or extinguish fires
D. To evacuate occupants
Answer: C. To control or extinguish fires
Explanation: Fire suppression systems are designed to control or extinguish fires once they
have been detected, minimizing damage and enhancing safety.
2. According to NFPA 13, what is the minimum spacing between sprinkler
heads in a light hazard area?
A. 8 feet
B. 12 feet
C. 15 feet
D. 20 feet
Answer: A. 8 feet
Explanation: NFPA 13 specifies that in light hazard areas, sprinkler heads should be spaced
no more than 8 feet apart to ensure adequate coverage.
3. Which type of fire extinguisher is suitable for electrical fires?
A. Water
B. Foam
C. CO₂
D. Class A
Answer: C. CO₂
Explanation: CO₂ extinguishers are ideal for electrical fires as they do not conduct electricity
and leave no residue.
4. What does the acronym NFPA stand for?
A. National Fire Protection Association
B. National Fire Prevention Agency
C. National Fire Policy Association
D. National Fire Planning Agency
Answer: A. National Fire Protection Association
1
, G35-N G35 - Class DF Fire Suppression Installation Contractor
Explanation: NFPA stands for National Fire Protection Association, which develops codes
and standards to minimize the risk and effects of fire.
5. During an inspection, you find corrosion on a fire sprinkler system. What is
the most appropriate action?
A. Clean the corrosion and continue
B. Replace the affected components
C. Ignore if minor
D. Report to the manufacturer
Answer: B. Replace the affected components
Explanation: Corrosion can compromise the integrity of the sprinkler system, requiring
replacement of affected parts to ensure proper functionality.
6. What is the minimum required water supply for a standard sprinkler
system?
A. 500 gallons
B. 1,000 gallons
C. 1,500 gallons
D. 2,000 gallons
Answer: B. 1,000 gallons
Explanation: A standard sprinkler system typically requires a minimum water supply of
1,000 gallons to ensure adequate coverage during a fire event.
7. Which NFPA standard covers the installation of fire pumps?
A. NFPA 13
B. NFPA 20
C. NFPA 25
D. NFPA 72
Answer: B. NFPA 20
Explanation: NFPA 20 provides the standards for the installation of stationary fire pumps
for fire protection.
8. What is the purpose of a fire alarm system in a fire suppression
installation?
2
, G35-N G35 - Class DF Fire Suppression Installation Contractor
A. To extinguish the fire
B. To notify occupants of a fire
C. To increase building ventilation
D. To supply water to sprinklers
Answer: B. To notify occupants of a fire
Explanation: Fire alarm systems are designed to alert occupants of a fire, enabling safe
evacuation and prompting a response from fire suppression systems.
9. How often should fire suppression systems be inspected according to NFPA
25?
A. Monthly
B. Quarterly
C. Annually
D. Every five years
Answer: C. Annually
Explanation: NFPA 25 requires that fire suppression systems undergo a thorough inspection
annually to ensure they are functioning correctly.
10. What is the primary function of a fire pump in a suppression system?
A. To detect smoke
B. To provide sufficient water pressure
C. To activate alarms
D. To control sprinkler heads
Answer: B. To provide sufficient water pressure
Explanation: Fire pumps are essential for maintaining the necessary water pressure in a fire
suppression system to ensure effective operation during a fire.
11. In a dry sprinkler system, what prevents water from entering the pipes
when there is no fire?
A. Sprinkler heads
B. Control valves
C. Dry pipe valves
D. Check valves
Answer: C. Dry pipe valves
Explanation: Dry pipe valves hold back water in the sprinkler pipes until a sprinkler head is
activated by heat, preventing accidental water discharge.
3
, G35-N G35 - Class DF Fire Suppression Installation Contractor
12. What type of sprinkler head is activated by heat?
A. Sprinkler with glass bulb
B. Sprinkler with fusible link
C. Both A and B
D. Neither A nor B
Answer: C. Both A and B
Explanation: Both glass bulb and fusible link sprinkler heads are activated by heat, causing
them to release water when a certain temperature is reached.
13. What is the minimum temperature at which most sprinkler heads
activate?
A. 135°F
B. 155°F
C. 175°F
D. 200°F
Answer: B. 155°F
Explanation: Most sprinkler heads are designed to activate at around 155°F, although this
can vary based on the specific application and standards.
14. Which component ensures that water flows in only one direction in a fire
suppression system?
A. Check valve
B. Control valve
C. Pressure gauge
D. Flow switch
Answer: A. Check valve
Explanation: A check valve allows water to flow in one direction, preventing backflow and
maintaining system pressure.
15. What is the purpose of a backflow preventer in a fire suppression system?
A. To increase water pressure
B. To prevent contamination of the water supply
C. To regulate water flow
D. To detect leaks
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1. What is the primary purpose of a fire suppression system?
A. To prevent fire from starting
B. To detect fire early
C. To control or extinguish fires
D. To evacuate occupants
Answer: C. To control or extinguish fires
Explanation: Fire suppression systems are designed to control or extinguish fires once they
have been detected, minimizing damage and enhancing safety.
2. According to NFPA 13, what is the minimum spacing between sprinkler
heads in a light hazard area?
A. 8 feet
B. 12 feet
C. 15 feet
D. 20 feet
Answer: A. 8 feet
Explanation: NFPA 13 specifies that in light hazard areas, sprinkler heads should be spaced
no more than 8 feet apart to ensure adequate coverage.
3. Which type of fire extinguisher is suitable for electrical fires?
A. Water
B. Foam
C. CO₂
D. Class A
Answer: C. CO₂
Explanation: CO₂ extinguishers are ideal for electrical fires as they do not conduct electricity
and leave no residue.
4. What does the acronym NFPA stand for?
A. National Fire Protection Association
B. National Fire Prevention Agency
C. National Fire Policy Association
D. National Fire Planning Agency
Answer: A. National Fire Protection Association
1
, G35-N G35 - Class DF Fire Suppression Installation Contractor
Explanation: NFPA stands for National Fire Protection Association, which develops codes
and standards to minimize the risk and effects of fire.
5. During an inspection, you find corrosion on a fire sprinkler system. What is
the most appropriate action?
A. Clean the corrosion and continue
B. Replace the affected components
C. Ignore if minor
D. Report to the manufacturer
Answer: B. Replace the affected components
Explanation: Corrosion can compromise the integrity of the sprinkler system, requiring
replacement of affected parts to ensure proper functionality.
6. What is the minimum required water supply for a standard sprinkler
system?
A. 500 gallons
B. 1,000 gallons
C. 1,500 gallons
D. 2,000 gallons
Answer: B. 1,000 gallons
Explanation: A standard sprinkler system typically requires a minimum water supply of
1,000 gallons to ensure adequate coverage during a fire event.
7. Which NFPA standard covers the installation of fire pumps?
A. NFPA 13
B. NFPA 20
C. NFPA 25
D. NFPA 72
Answer: B. NFPA 20
Explanation: NFPA 20 provides the standards for the installation of stationary fire pumps
for fire protection.
8. What is the purpose of a fire alarm system in a fire suppression
installation?
2
, G35-N G35 - Class DF Fire Suppression Installation Contractor
A. To extinguish the fire
B. To notify occupants of a fire
C. To increase building ventilation
D. To supply water to sprinklers
Answer: B. To notify occupants of a fire
Explanation: Fire alarm systems are designed to alert occupants of a fire, enabling safe
evacuation and prompting a response from fire suppression systems.
9. How often should fire suppression systems be inspected according to NFPA
25?
A. Monthly
B. Quarterly
C. Annually
D. Every five years
Answer: C. Annually
Explanation: NFPA 25 requires that fire suppression systems undergo a thorough inspection
annually to ensure they are functioning correctly.
10. What is the primary function of a fire pump in a suppression system?
A. To detect smoke
B. To provide sufficient water pressure
C. To activate alarms
D. To control sprinkler heads
Answer: B. To provide sufficient water pressure
Explanation: Fire pumps are essential for maintaining the necessary water pressure in a fire
suppression system to ensure effective operation during a fire.
11. In a dry sprinkler system, what prevents water from entering the pipes
when there is no fire?
A. Sprinkler heads
B. Control valves
C. Dry pipe valves
D. Check valves
Answer: C. Dry pipe valves
Explanation: Dry pipe valves hold back water in the sprinkler pipes until a sprinkler head is
activated by heat, preventing accidental water discharge.
3
, G35-N G35 - Class DF Fire Suppression Installation Contractor
12. What type of sprinkler head is activated by heat?
A. Sprinkler with glass bulb
B. Sprinkler with fusible link
C. Both A and B
D. Neither A nor B
Answer: C. Both A and B
Explanation: Both glass bulb and fusible link sprinkler heads are activated by heat, causing
them to release water when a certain temperature is reached.
13. What is the minimum temperature at which most sprinkler heads
activate?
A. 135°F
B. 155°F
C. 175°F
D. 200°F
Answer: B. 155°F
Explanation: Most sprinkler heads are designed to activate at around 155°F, although this
can vary based on the specific application and standards.
14. Which component ensures that water flows in only one direction in a fire
suppression system?
A. Check valve
B. Control valve
C. Pressure gauge
D. Flow switch
Answer: A. Check valve
Explanation: A check valve allows water to flow in one direction, preventing backflow and
maintaining system pressure.
15. What is the purpose of a backflow preventer in a fire suppression system?
A. To increase water pressure
B. To prevent contamination of the water supply
C. To regulate water flow
D. To detect leaks
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