NM MS12 FIRE PROTECTION SYSTEMS PRACTICE EXAM
1. Which fire classification involves energized electrical
equipment?
A. Class A
B. Class B
C. Class C
D. Class K
Rationale: Class C fires involve energized electrical equipment;
removing power is essential before extinguishing.
2. Which fire suppression agent is MOST effective for Class K
fires?
A. Water
B. Foam
C. Wet chemical
D. CO₂
Rationale: Wet chemical agents saponify grease, cooling and
smothering kitchen fires.
3. The minimum required pressure for a standpipe system at
the most remote hose connection is:
,A. 50 psi
B. 100 psi
C. 75 psi
D. 125 psi
Rationale: NFPA standards require at least 100 psi at the most
remote 2½-inch connection.
4. A deluge sprinkler system features:
A. Closed sprinklers
B. Open sprinklers
C. Pre-action valves
D. Fixed-temperature heads
Rationale: Deluge systems use open sprinklers with a valve
triggered by detection systems.
5. CO₂ suppression systems primarily work by:
A. Increasing heat
B. Displacing oxygen
C. Cooling surfaces
D. Producing foam
Rationale: CO₂ reduces oxygen concentration below
combustion levels.
,6. A pre-action sprinkler system activates only when:
A. Heat melts the sprinkler head
B. Detection alarms activate
C. Both detection activates and a sprinkler head opens
D. Water pressure drops
Rationale: Pre-action systems require two events to prevent
accidental discharge.
7. What is the minimum required clearance below sprinkler
deflectors?
A. 12 inches
B. 6 inches
C. 18 inches
D. 24 inches
Rationale: NFPA 13 mandates 18 inches of clearance for
unobstructed spray patterns.
8. The fire triangle consists of fuel, heat, and:
A. Electricity
B. CO₂
C. Oxygen
D. Water
, Rationale: Oxygen sustains combustion along with heat and
fuel.
9. What does a dry-pipe sprinkler system contain in its piping?
A. Water
B. Foam
C. Pressurized air or nitrogen
D. Steam
Rationale: Dry-pipe systems use air pressure to keep water out
until activation.
10. Which fire detection device senses light particles produced
by flaming fires?
A. Heat detector
B. Ionization detector
C. Flame detector
D. Photoelectric detector
Rationale: Flame detectors detect UV or IR signatures from
flames.
11. A fire pump's churn pressure refers to:
1. Which fire classification involves energized electrical
equipment?
A. Class A
B. Class B
C. Class C
D. Class K
Rationale: Class C fires involve energized electrical equipment;
removing power is essential before extinguishing.
2. Which fire suppression agent is MOST effective for Class K
fires?
A. Water
B. Foam
C. Wet chemical
D. CO₂
Rationale: Wet chemical agents saponify grease, cooling and
smothering kitchen fires.
3. The minimum required pressure for a standpipe system at
the most remote hose connection is:
,A. 50 psi
B. 100 psi
C. 75 psi
D. 125 psi
Rationale: NFPA standards require at least 100 psi at the most
remote 2½-inch connection.
4. A deluge sprinkler system features:
A. Closed sprinklers
B. Open sprinklers
C. Pre-action valves
D. Fixed-temperature heads
Rationale: Deluge systems use open sprinklers with a valve
triggered by detection systems.
5. CO₂ suppression systems primarily work by:
A. Increasing heat
B. Displacing oxygen
C. Cooling surfaces
D. Producing foam
Rationale: CO₂ reduces oxygen concentration below
combustion levels.
,6. A pre-action sprinkler system activates only when:
A. Heat melts the sprinkler head
B. Detection alarms activate
C. Both detection activates and a sprinkler head opens
D. Water pressure drops
Rationale: Pre-action systems require two events to prevent
accidental discharge.
7. What is the minimum required clearance below sprinkler
deflectors?
A. 12 inches
B. 6 inches
C. 18 inches
D. 24 inches
Rationale: NFPA 13 mandates 18 inches of clearance for
unobstructed spray patterns.
8. The fire triangle consists of fuel, heat, and:
A. Electricity
B. CO₂
C. Oxygen
D. Water
, Rationale: Oxygen sustains combustion along with heat and
fuel.
9. What does a dry-pipe sprinkler system contain in its piping?
A. Water
B. Foam
C. Pressurized air or nitrogen
D. Steam
Rationale: Dry-pipe systems use air pressure to keep water out
until activation.
10. Which fire detection device senses light particles produced
by flaming fires?
A. Heat detector
B. Ionization detector
C. Flame detector
D. Photoelectric detector
Rationale: Flame detectors detect UV or IR signatures from
flames.
11. A fire pump's churn pressure refers to:
