NYC CUSTODIAN ENGINEER EXAMINATION
COMPLETE QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR JUST
RELEASED
Exam Coverage
1. Boiler Operations and Maintenance
o Steam and hot water boilers, combustion, controls, inspections, troubleshooting, efficiency, and
safety.
2. HVAC Systems
o Heating, ventilation, air conditioning, air distribution, refrigeration principles, and preventive
maintenance.
3. Electrical Systems
o Electrical safety, motors, transformers, switchgear, distribution systems, emergency power, and
troubleshooting.
4. Plumbing Systems
o Water supply, drainage, pumps, valves, backflow prevention, and plumbing maintenance.
5. Fire Protection and Life Safety
o Fire alarms, sprinklers, standpipes, emergency procedures, evacuation, and code compliance.
6. Building Operations and Maintenance
o Preventive maintenance programs, building inspections, repairs, housekeeping, and equipment
management.
7. Energy Management and Conservation
o Energy efficiency strategies, fuel management, building automation systems, and sustainability
practices.
8. Occupational Safety and Health
o OSHA requirements, lockout/tagout, confined spaces, PPE, hazard communication, and accident
prevention.
9. NYC Building Codes and Regulations
o Applicable city codes, permits, inspections, violations, and recordkeeping requirements.
10. Supervision and Facility Management
Staff supervision, work scheduling, budgeting, contractor oversight, documentation, and emergency
response planning.
NYC Custodian Engineer Examination
1.
During a routine boiler room inspection, which condition would most likely
require immediate corrective action because it presents the greatest safety risk?
,A. Slight discoloration on boiler insulation
B. Missing boiler room inventory list
C. Fuel leak near the burner assembly
D. Minor dust accumulation on piping
Answer: C
Rationale: Fuel leaks can create fire and explosion hazards and require immediate
action. The other conditions are less urgent from a life-safety perspective.
2.
A custodian engineer notices that a centrifugal pump is running but delivering
significantly less water than normal. What should be investigated first?
A. Pump impeller damage or blockage
B. Paint condition of the pump housing
C. Manufacturer logo condition
D. Building occupancy level
Answer: A
Rationale: Reduced flow commonly results from impeller wear, blockage, or
mechanical issues affecting pump performance.
3.
Which maintenance practice is most effective for extending the service life of
HVAC equipment while reducing unexpected failures?
A. Waiting for equipment failure before repairs
B. Preventive maintenance scheduling
C. Reducing airflow throughout the building
D. Operating equipment continuously
Answer: B
,Rationale: Preventive maintenance identifies problems before major failures occur
and improves reliability and equipment lifespan.
4.
When performing lockout/tagout procedures on electrical equipment, what is the
primary objective of the process?
A. Improve equipment efficiency
B. Increase voltage stability
C. Prevent accidental energization during maintenance
D. Reduce energy consumption
Answer: C
Rationale: Lockout/tagout protects workers by ensuring equipment cannot be
unexpectedly energized while maintenance is being performed.
5.
A boiler's low-water cutoff device is designed primarily to prevent which
dangerous operating condition?
A. Excessive airflow
B. Dry firing of the boiler
C. Excessive lubrication
D. High humidity
Answer: B
Rationale: Dry firing can severely damage a boiler and create hazardous
conditions. Low-water cutoffs protect against this event.
6.
, Which type of fire extinguisher is generally most appropriate for energized
electrical equipment fires?
A. Class A
B. Water extinguisher
C. Class C
D. Class K
Answer: C
Rationale: Class C extinguishers are designed for energized electrical equipment
and reduce shock hazards.
7.
What is the primary purpose of a building automation system in a large facility?
A. Increase staffing requirements
B. Automate and monitor building systems efficiently
C. Eliminate preventive maintenance
D. Replace all facility personnel
Answer: B
Rationale: Building automation systems monitor and control HVAC, lighting, and
other systems to improve efficiency and operation.
8.
A motor repeatedly trips its overload protection during normal operation. What is
the most likely reason requiring investigation?
A. Excessive mechanical load on the motor
B. Clean motor nameplate
C. Adequate lubrication records
D. New paint on equipment
COMPLETE QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR JUST
RELEASED
Exam Coverage
1. Boiler Operations and Maintenance
o Steam and hot water boilers, combustion, controls, inspections, troubleshooting, efficiency, and
safety.
2. HVAC Systems
o Heating, ventilation, air conditioning, air distribution, refrigeration principles, and preventive
maintenance.
3. Electrical Systems
o Electrical safety, motors, transformers, switchgear, distribution systems, emergency power, and
troubleshooting.
4. Plumbing Systems
o Water supply, drainage, pumps, valves, backflow prevention, and plumbing maintenance.
5. Fire Protection and Life Safety
o Fire alarms, sprinklers, standpipes, emergency procedures, evacuation, and code compliance.
6. Building Operations and Maintenance
o Preventive maintenance programs, building inspections, repairs, housekeeping, and equipment
management.
7. Energy Management and Conservation
o Energy efficiency strategies, fuel management, building automation systems, and sustainability
practices.
8. Occupational Safety and Health
o OSHA requirements, lockout/tagout, confined spaces, PPE, hazard communication, and accident
prevention.
9. NYC Building Codes and Regulations
o Applicable city codes, permits, inspections, violations, and recordkeeping requirements.
10. Supervision and Facility Management
Staff supervision, work scheduling, budgeting, contractor oversight, documentation, and emergency
response planning.
NYC Custodian Engineer Examination
1.
During a routine boiler room inspection, which condition would most likely
require immediate corrective action because it presents the greatest safety risk?
,A. Slight discoloration on boiler insulation
B. Missing boiler room inventory list
C. Fuel leak near the burner assembly
D. Minor dust accumulation on piping
Answer: C
Rationale: Fuel leaks can create fire and explosion hazards and require immediate
action. The other conditions are less urgent from a life-safety perspective.
2.
A custodian engineer notices that a centrifugal pump is running but delivering
significantly less water than normal. What should be investigated first?
A. Pump impeller damage or blockage
B. Paint condition of the pump housing
C. Manufacturer logo condition
D. Building occupancy level
Answer: A
Rationale: Reduced flow commonly results from impeller wear, blockage, or
mechanical issues affecting pump performance.
3.
Which maintenance practice is most effective for extending the service life of
HVAC equipment while reducing unexpected failures?
A. Waiting for equipment failure before repairs
B. Preventive maintenance scheduling
C. Reducing airflow throughout the building
D. Operating equipment continuously
Answer: B
,Rationale: Preventive maintenance identifies problems before major failures occur
and improves reliability and equipment lifespan.
4.
When performing lockout/tagout procedures on electrical equipment, what is the
primary objective of the process?
A. Improve equipment efficiency
B. Increase voltage stability
C. Prevent accidental energization during maintenance
D. Reduce energy consumption
Answer: C
Rationale: Lockout/tagout protects workers by ensuring equipment cannot be
unexpectedly energized while maintenance is being performed.
5.
A boiler's low-water cutoff device is designed primarily to prevent which
dangerous operating condition?
A. Excessive airflow
B. Dry firing of the boiler
C. Excessive lubrication
D. High humidity
Answer: B
Rationale: Dry firing can severely damage a boiler and create hazardous
conditions. Low-water cutoffs protect against this event.
6.
, Which type of fire extinguisher is generally most appropriate for energized
electrical equipment fires?
A. Class A
B. Water extinguisher
C. Class C
D. Class K
Answer: C
Rationale: Class C extinguishers are designed for energized electrical equipment
and reduce shock hazards.
7.
What is the primary purpose of a building automation system in a large facility?
A. Increase staffing requirements
B. Automate and monitor building systems efficiently
C. Eliminate preventive maintenance
D. Replace all facility personnel
Answer: B
Rationale: Building automation systems monitor and control HVAC, lighting, and
other systems to improve efficiency and operation.
8.
A motor repeatedly trips its overload protection during normal operation. What is
the most likely reason requiring investigation?
A. Excessive mechanical load on the motor
B. Clean motor nameplate
C. Adequate lubrication records
D. New paint on equipment
