FE – CERTIFIED PORTABLE FIRE EXTINGUISHER
TECHNICIAN NEWEST MAIN EXAM PRACTICE
QUESTIONS 2026 -2027| 100 ORIGINAL
QUESTIONS & ANSWERS FROM ACTUAL PAST
PAPERS | DETAILED RATIONALES | COMPLETE
EXAM PREP GRADED A+
1. A portable fire extinguisher is selected for a fire involving energized
electrical equipment. Which classification is most appropriate?
A. Class A
B. Class B
C. Class C
D. Class D
Answer: C. Class C
Class C extinguishers are intended for fires involving energized electrical
equipment. The classification addresses the electrical hazard rather than the fuel
itself.
2. A technician encounters a fire involving ordinary combustible materials such
as wood, paper, and cloth. Which fire classification applies?
A. Class A
B. Class B
C. Class C
D. Class K
Answer: A. Class A
,Class A fires involve ordinary combustible materials. Class B involves flammable
liquids, Class C involves energized electrical equipment, and Class K involves
cooking oils and fats.
3. Before servicing a stored-pressure dry chemical extinguisher, what is the
technician's most important initial consideration?
A. Remove the discharge hose
B. Verify that the extinguisher is depressurized
C. Remove the safety pin
D. Operate the handle repeatedly
Answer: B. Verify that the extinguisher is depressurized
An extinguisher must be safely depressurized before disassembly. Removing
components from a pressurized cylinder can create a serious hazard.
4. Which component prevents accidental operation of a portable fire
extinguisher?
A. Pressure gauge
B. Discharge horn
C. Safety pin
D. Dip tube
Answer: C. Safety pin
The safety pin prevents accidental activation of the operating mechanism until it is
intentionally removed.
5. A technician finds a dry chemical extinguisher with a gauge reading in the
recharge region. What should be done?
A. Return it to service
B. Replace only the gauge
C. Recharge or service it as required
D. Increase the pressure manually
Answer: C. Recharge or service it as required
,A gauge outside the normal operating range indicates that the extinguisher may
not be ready for service and requires appropriate servicing.
6. Which component directs extinguishing agent toward the fire?
A. Discharge assembly
B. Safety pin
C. Valve stem
D. Cylinder collar
Answer: A. Discharge assembly
The discharge assembly, which may include a hose, nozzle, or horn, directs the
extinguishing agent toward the fire.
7. A technician is inspecting a portable extinguisher and discovers significant
corrosion on the cylinder body. What is the appropriate response?
A. Paint over the corrosion
B. Polish the affected area
C. Remove the extinguisher from service for proper evaluation
D. Increase the operating pressure
Answer: C. Remove the extinguisher from service for proper evaluation
Significant cylinder corrosion can compromise pressure-vessel integrity. Cosmetic
treatment does not correct structural damage.
8. Which extinguishing agent is commonly associated with Class K fires?
A. Water
B. Wet chemical
C. Carbon dioxide only
D. Dry sand
Answer: B. Wet chemical
Wet-chemical extinguishers are specifically designed for fires involving cooking oils
and fats, particularly in commercial cooking applications.
, 9. What is the primary purpose of the pressure gauge on a stored-pressure
extinguisher?
A. Measure cylinder wall thickness
B. Indicate whether internal pressure is within the normal operating range
C. Measure discharge velocity
D. Determine agent quantity directly
Answer: B. Indicate whether internal pressure is within the normal operating
range
The gauge provides an indication of internal pressure and helps determine
whether the extinguisher is pressurized within its intended operating range.
10.Which extinguisher is generally inappropriate for an energized electrical fire
because of its conductivity?
A. Carbon dioxide
B. Dry chemical
C. Water
D. Clean agent
Answer: C. Water
Water can conduct electricity and may expose the operator to electrical shock
when used improperly on energized electrical equipment.
11.A portable extinguisher has been discharged even though most of the agent
remains inside. What is generally required before it can be returned to
service?
A. Reinstall the safety pin only
B. Recharge according to the manufacturer's requirements
C. Wipe the cylinder clean
D. Replace the nameplate
Answer: B. Recharge according to the manufacturer's requirements
TECHNICIAN NEWEST MAIN EXAM PRACTICE
QUESTIONS 2026 -2027| 100 ORIGINAL
QUESTIONS & ANSWERS FROM ACTUAL PAST
PAPERS | DETAILED RATIONALES | COMPLETE
EXAM PREP GRADED A+
1. A portable fire extinguisher is selected for a fire involving energized
electrical equipment. Which classification is most appropriate?
A. Class A
B. Class B
C. Class C
D. Class D
Answer: C. Class C
Class C extinguishers are intended for fires involving energized electrical
equipment. The classification addresses the electrical hazard rather than the fuel
itself.
2. A technician encounters a fire involving ordinary combustible materials such
as wood, paper, and cloth. Which fire classification applies?
A. Class A
B. Class B
C. Class C
D. Class K
Answer: A. Class A
,Class A fires involve ordinary combustible materials. Class B involves flammable
liquids, Class C involves energized electrical equipment, and Class K involves
cooking oils and fats.
3. Before servicing a stored-pressure dry chemical extinguisher, what is the
technician's most important initial consideration?
A. Remove the discharge hose
B. Verify that the extinguisher is depressurized
C. Remove the safety pin
D. Operate the handle repeatedly
Answer: B. Verify that the extinguisher is depressurized
An extinguisher must be safely depressurized before disassembly. Removing
components from a pressurized cylinder can create a serious hazard.
4. Which component prevents accidental operation of a portable fire
extinguisher?
A. Pressure gauge
B. Discharge horn
C. Safety pin
D. Dip tube
Answer: C. Safety pin
The safety pin prevents accidental activation of the operating mechanism until it is
intentionally removed.
5. A technician finds a dry chemical extinguisher with a gauge reading in the
recharge region. What should be done?
A. Return it to service
B. Replace only the gauge
C. Recharge or service it as required
D. Increase the pressure manually
Answer: C. Recharge or service it as required
,A gauge outside the normal operating range indicates that the extinguisher may
not be ready for service and requires appropriate servicing.
6. Which component directs extinguishing agent toward the fire?
A. Discharge assembly
B. Safety pin
C. Valve stem
D. Cylinder collar
Answer: A. Discharge assembly
The discharge assembly, which may include a hose, nozzle, or horn, directs the
extinguishing agent toward the fire.
7. A technician is inspecting a portable extinguisher and discovers significant
corrosion on the cylinder body. What is the appropriate response?
A. Paint over the corrosion
B. Polish the affected area
C. Remove the extinguisher from service for proper evaluation
D. Increase the operating pressure
Answer: C. Remove the extinguisher from service for proper evaluation
Significant cylinder corrosion can compromise pressure-vessel integrity. Cosmetic
treatment does not correct structural damage.
8. Which extinguishing agent is commonly associated with Class K fires?
A. Water
B. Wet chemical
C. Carbon dioxide only
D. Dry sand
Answer: B. Wet chemical
Wet-chemical extinguishers are specifically designed for fires involving cooking oils
and fats, particularly in commercial cooking applications.
, 9. What is the primary purpose of the pressure gauge on a stored-pressure
extinguisher?
A. Measure cylinder wall thickness
B. Indicate whether internal pressure is within the normal operating range
C. Measure discharge velocity
D. Determine agent quantity directly
Answer: B. Indicate whether internal pressure is within the normal operating
range
The gauge provides an indication of internal pressure and helps determine
whether the extinguisher is pressurized within its intended operating range.
10.Which extinguisher is generally inappropriate for an energized electrical fire
because of its conductivity?
A. Carbon dioxide
B. Dry chemical
C. Water
D. Clean agent
Answer: C. Water
Water can conduct electricity and may expose the operator to electrical shock
when used improperly on energized electrical equipment.
11.A portable extinguisher has been discharged even though most of the agent
remains inside. What is generally required before it can be returned to
service?
A. Reinstall the safety pin only
B. Recharge according to the manufacturer's requirements
C. Wipe the cylinder clean
D. Replace the nameplate
Answer: B. Recharge according to the manufacturer's requirements
