NYC NYCHA Maintenance Worker Exam Prep | Latest Practice
Questions & Answers with Detailed Rationales Instant Download
EXAM COVERAGE SUMMARY
Building Systems & Maintenance
Plumbing systems (pipes, fixtures, drains, water heaters)
Electrical systems (circuits, breakers, wiring, safety)
HVAC systems (filters, thermostats, compressors, refrigerants)
Structural components (walls, floors, roofs, foundations)
Tools & Equipment
Hand tools (screwdrivers, wrenches, pliers, hammers)
Power tools (saws, drills, sanders)
Measuring instruments (levels, gauges, meters)
Specialty tools (snakes, plungers, pipe wrenches)
Safety & PPE
Personal protective equipment requirements
Lockout/tagout procedures
Fire safety and extinguisher types
Ladder safety and fall protection
Chemical handling and storage
Preventive Maintenance
Scheduled inspections
Filter replacement
Lubrication procedures
System efficiency checks
Record keeping
Emergency Response
Water leaks and flooding
Power outages
Fire emergencies
Gas leaks
Security issues
NYCHA Policies & Procedures
Work order systems
, Tenant communication
Documentation requirements
Regulatory compliance
Priority response times
Material Identification
Pipe materials (copper, PVC, steel, PEX)
Fasteners and hardware
Sealants and adhesives
Insulation materials
Electrical components
Troubleshooting
Diagnostic procedures
Common failure modes
Root cause analysis
Systematic inspection methods
250 QUESTIONS
1. A maintenance worker arrives at an apartment where the tenant reports that the bathroom
sink drains very slowly and water takes several minutes to empty completely. What is the most
appropriate first step in addressing this issue?
a) Immediately pour a commercial chemical drain cleaner down the drain
b) Remove the entire sink assembly from the wall to access the pipes
c) Inspect the drain opening and use a plunger or plumbing snake to attempt clearing the blockage
d) Call a master plumber and submit an emergency work order request
Rationale: Mechanical methods like plungers or snakes are safe, effective first steps that minimize
damage risk and avoid chemical hazards.
2. During a routine inspection of an apartment building's electrical panel, a maintenance
worker notices that one circuit breaker feels warm to the touch and has tripped multiple times
in the past week. What should the worker do first?
a) Replace the circuit breaker with a higher amperage unit to prevent future tripping
b) Ignore the warmth since circuit breakers naturally generate some heat during normal operation
,c) Investigate the circuit for potential overload conditions or faulty wiring before taking further action
d) Immediately shut off power to the entire building until an electrician can be contacted
Rationale: Warm breakers and repeated tripping indicate potential overload or wiring issues that
require investigation before replacement or other actions.
3. A maintenance worker needs to replace a section of damaged plumbing pipe in a residential
building's basement. The existing pipe is made of copper and carries hot water. Which
replacement material would be most appropriate for this application?
a) Aluminum piping because it is lightweight and resists corrosion
b) PVC piping because it is inexpensive and easy to install
c) Copper piping because it matches the existing material and handles hot water well
d) Galvanized steel piping because it provides superior strength
Rationale: Matching the existing pipe material ensures compatibility and copper's excellent heat
resistance makes it ideal for hot water systems.
4. When conducting preventive maintenance on a rooftop air conditioning unit, the worker
notices that the air filter is heavily clogged with dust and debris. What is the most immediate
concern related to this condition?
a) The clogged filter will cause the unit to operate more quietly than normal
b) Restricted airflow will reduce system efficiency and potentially damage the compressor
c) The filter blockage will increase the refrigerant pressure in the system
d) A dirty filter will cause the thermostat to malfunction and display incorrect temperatures
Rationale: Clogged filters restrict airflow, forcing the system to work harder, reducing efficiency, and
potentially causing compressor failure from overheating.
5. A tenant calls the maintenance office to report that their kitchen garbage disposal is making a
loud grinding noise and will not turn properly when activated. What is the safest procedure for
the maintenance worker to follow when investigating this issue?
a) Reach directly into the disposal opening to feel for any obstructions while the unit is turned on
b) Turn off power to the disposal, use a flashlight to inspect the chamber, and use tongs or pliers to
remove any visible obstructions
c) Pour a large amount of boiling water down the disposal to dissolve any food blockages
d) Repeatedly turn the disposal on and off to force the obstruction to clear itself
Rationale: Power must be disconnected before any inspection to prevent serious injury, and tools
should be used to remove obstructions safely.
, 6. During a winter inspection, a maintenance worker finds that a section of pipe in an unheated
basement has frozen but has not yet burst. What is the most appropriate immediate action to
prevent pipe rupture?
a) Apply direct flame from a propane torch to the frozen section to rapidly thaw the ice
b) Open the affected faucet and gently apply heat to the pipe using a hair dryer or heat gun while
moving it continuously
c) Close all valves in the area and wait for warmer weather to naturally thaw the pipe
d) Cut out the frozen section immediately and install a new pipe before thawing occurs
Rationale: Opening the faucet relieves pressure and applying gentle, moving heat safely thaws the
pipe without causing steam expansion or damage.
7. A maintenance worker is preparing to use an electric power saw to cut through a wooden
door frame. Which combination of personal protective equipment is most essential for this task?
a) Hard hat and steel-toed boots only
b) Safety goggles and heavy-duty work gloves
c) Ear plugs and a dust mask only
d) Safety goggles, hearing protection, and cut-resistant gloves
Rationale: Power saws create flying debris requiring eye protection, loud noise requiring hearing
protection, and sharp blades requiring cut-resistant gloves.
8. In an apartment building, a tenant reports that the toilet continuously runs water even when
not in use. The maintenance worker suspects a problem with the internal tank components.
Which part is most likely causing this issue?
a) The supply line shut-off valve located on the wall behind the toilet
b) The wax seal ring between the toilet base and the floor flange
c) The flapper valve or fill valve mechanism inside the toilet tank
d) The toilet bowl's trapway that connects to the main drain line
Rationale: A worn or misaligned flapper valve fails to seal properly, allowing water to continuously
flow from tank to bowl, causing the running sound.
9. Which type of fire extinguisher would be most appropriate for a maintenance worker to use
when responding to a small electrical fire that has started in an apartment's electrical panel?
a) A Class A water-based extinguisher that cools the burning materials
b) A Class B foam extinguisher that smothers flammable liquids
Questions & Answers with Detailed Rationales Instant Download
EXAM COVERAGE SUMMARY
Building Systems & Maintenance
Plumbing systems (pipes, fixtures, drains, water heaters)
Electrical systems (circuits, breakers, wiring, safety)
HVAC systems (filters, thermostats, compressors, refrigerants)
Structural components (walls, floors, roofs, foundations)
Tools & Equipment
Hand tools (screwdrivers, wrenches, pliers, hammers)
Power tools (saws, drills, sanders)
Measuring instruments (levels, gauges, meters)
Specialty tools (snakes, plungers, pipe wrenches)
Safety & PPE
Personal protective equipment requirements
Lockout/tagout procedures
Fire safety and extinguisher types
Ladder safety and fall protection
Chemical handling and storage
Preventive Maintenance
Scheduled inspections
Filter replacement
Lubrication procedures
System efficiency checks
Record keeping
Emergency Response
Water leaks and flooding
Power outages
Fire emergencies
Gas leaks
Security issues
NYCHA Policies & Procedures
Work order systems
, Tenant communication
Documentation requirements
Regulatory compliance
Priority response times
Material Identification
Pipe materials (copper, PVC, steel, PEX)
Fasteners and hardware
Sealants and adhesives
Insulation materials
Electrical components
Troubleshooting
Diagnostic procedures
Common failure modes
Root cause analysis
Systematic inspection methods
250 QUESTIONS
1. A maintenance worker arrives at an apartment where the tenant reports that the bathroom
sink drains very slowly and water takes several minutes to empty completely. What is the most
appropriate first step in addressing this issue?
a) Immediately pour a commercial chemical drain cleaner down the drain
b) Remove the entire sink assembly from the wall to access the pipes
c) Inspect the drain opening and use a plunger or plumbing snake to attempt clearing the blockage
d) Call a master plumber and submit an emergency work order request
Rationale: Mechanical methods like plungers or snakes are safe, effective first steps that minimize
damage risk and avoid chemical hazards.
2. During a routine inspection of an apartment building's electrical panel, a maintenance
worker notices that one circuit breaker feels warm to the touch and has tripped multiple times
in the past week. What should the worker do first?
a) Replace the circuit breaker with a higher amperage unit to prevent future tripping
b) Ignore the warmth since circuit breakers naturally generate some heat during normal operation
,c) Investigate the circuit for potential overload conditions or faulty wiring before taking further action
d) Immediately shut off power to the entire building until an electrician can be contacted
Rationale: Warm breakers and repeated tripping indicate potential overload or wiring issues that
require investigation before replacement or other actions.
3. A maintenance worker needs to replace a section of damaged plumbing pipe in a residential
building's basement. The existing pipe is made of copper and carries hot water. Which
replacement material would be most appropriate for this application?
a) Aluminum piping because it is lightweight and resists corrosion
b) PVC piping because it is inexpensive and easy to install
c) Copper piping because it matches the existing material and handles hot water well
d) Galvanized steel piping because it provides superior strength
Rationale: Matching the existing pipe material ensures compatibility and copper's excellent heat
resistance makes it ideal for hot water systems.
4. When conducting preventive maintenance on a rooftop air conditioning unit, the worker
notices that the air filter is heavily clogged with dust and debris. What is the most immediate
concern related to this condition?
a) The clogged filter will cause the unit to operate more quietly than normal
b) Restricted airflow will reduce system efficiency and potentially damage the compressor
c) The filter blockage will increase the refrigerant pressure in the system
d) A dirty filter will cause the thermostat to malfunction and display incorrect temperatures
Rationale: Clogged filters restrict airflow, forcing the system to work harder, reducing efficiency, and
potentially causing compressor failure from overheating.
5. A tenant calls the maintenance office to report that their kitchen garbage disposal is making a
loud grinding noise and will not turn properly when activated. What is the safest procedure for
the maintenance worker to follow when investigating this issue?
a) Reach directly into the disposal opening to feel for any obstructions while the unit is turned on
b) Turn off power to the disposal, use a flashlight to inspect the chamber, and use tongs or pliers to
remove any visible obstructions
c) Pour a large amount of boiling water down the disposal to dissolve any food blockages
d) Repeatedly turn the disposal on and off to force the obstruction to clear itself
Rationale: Power must be disconnected before any inspection to prevent serious injury, and tools
should be used to remove obstructions safely.
, 6. During a winter inspection, a maintenance worker finds that a section of pipe in an unheated
basement has frozen but has not yet burst. What is the most appropriate immediate action to
prevent pipe rupture?
a) Apply direct flame from a propane torch to the frozen section to rapidly thaw the ice
b) Open the affected faucet and gently apply heat to the pipe using a hair dryer or heat gun while
moving it continuously
c) Close all valves in the area and wait for warmer weather to naturally thaw the pipe
d) Cut out the frozen section immediately and install a new pipe before thawing occurs
Rationale: Opening the faucet relieves pressure and applying gentle, moving heat safely thaws the
pipe without causing steam expansion or damage.
7. A maintenance worker is preparing to use an electric power saw to cut through a wooden
door frame. Which combination of personal protective equipment is most essential for this task?
a) Hard hat and steel-toed boots only
b) Safety goggles and heavy-duty work gloves
c) Ear plugs and a dust mask only
d) Safety goggles, hearing protection, and cut-resistant gloves
Rationale: Power saws create flying debris requiring eye protection, loud noise requiring hearing
protection, and sharp blades requiring cut-resistant gloves.
8. In an apartment building, a tenant reports that the toilet continuously runs water even when
not in use. The maintenance worker suspects a problem with the internal tank components.
Which part is most likely causing this issue?
a) The supply line shut-off valve located on the wall behind the toilet
b) The wax seal ring between the toilet base and the floor flange
c) The flapper valve or fill valve mechanism inside the toilet tank
d) The toilet bowl's trapway that connects to the main drain line
Rationale: A worn or misaligned flapper valve fails to seal properly, allowing water to continuously
flow from tank to bowl, causing the running sound.
9. Which type of fire extinguisher would be most appropriate for a maintenance worker to use
when responding to a small electrical fire that has started in an apartment's electrical panel?
a) A Class A water-based extinguisher that cools the burning materials
b) A Class B foam extinguisher that smothers flammable liquids
