NYC Health + Hospitals Plant Utilities
Engineer Examination Practice Exam
2026 | 100 Questions & Answers with
Detailed Rationales | Complete Exam
Prep & Study Guide
1. What is the primary purpose of a preventive maintenance program in a
healthcare facility?
A. To eliminate all equipment failures
B. To reduce unexpected failures and extend equipment life
C. To increase equipment operating temperatures
D. To avoid keeping maintenance records
Answer: To reduce unexpected failures and extend equipment life
Rationale: Preventive maintenance identifies and corrects developing problems
before they cause major failures, improving reliability, safety, and equipment
service life.
2. Which instrument is commonly used to measure electrical current?
A. Voltmeter
B. Ohmmeter
,C. Ammeter
D. Megohmmeter
Answer: Ammeter
Rationale: An ammeter measures electrical current, normally expressed in
amperes.
3. What is the purpose of a circuit breaker?
A. To increase voltage
B. To protect a circuit from excessive current
C. To reduce water pressure
D. To regulate steam temperature
Answer: To protect a circuit from excessive current
Rationale: Circuit breakers interrupt electrical current when an overload or short
circuit creates unsafe conditions.
4. In a steam heating system, what is the primary purpose of a steam trap?
A. To increase steam pressure
B. To remove condensate while retaining steam
C. To add water to the boiler
D. To cool the steam
Answer: To remove condensate while retaining steam
Rationale: Steam traps discharge condensate and non-condensable gases while
preventing useful steam from escaping.
5. What does HVAC stand for?
A. Heating, Ventilation, and Air Conditioning
B. High Voltage Air Control
C. Heating Valve and Cooling
D. Hydraulic Ventilation and Circulation
,Answer: Heating, Ventilation, and Air Conditioning
Rationale: HVAC systems provide temperature control, ventilation, humidity
control, and air movement within buildings.
6. Which component transfers heat from refrigerant to surrounding air in an
air-cooled refrigeration system?
A. Evaporator
B. Compressor
C. Condenser
D. Expansion valve
Answer: Condenser
Rationale: The condenser rejects heat from the refrigerant to the surrounding
air, causing the refrigerant to condense.
7. What is the primary function of a pump?
A. To create electrical voltage
B. To move fluids through a system
C. To remove electrical resistance
D. To generate compressed air
Answer: To move fluids through a system
Rationale: Pumps impart energy to liquids so they can be transported through
piping systems against resistance and elevation differences.
8. What should be done before servicing energized electrical equipment?
A. Increase the load
B. Apply lockout/tagout procedures
C. Remove warning labels
D. Spray the equipment with water
Answer: Apply lockout/tagout procedures
, Rationale: Lockout/tagout isolates hazardous energy and prevents unexpected
energization during maintenance.
9. What is the purpose of a pressure relief valve on a boiler?
A. To increase boiler pressure
B. To prevent excessive pressure buildup
C. To reduce water hardness
D. To improve combustion efficiency
Answer: To prevent excessive pressure buildup
Rationale: A pressure relief valve automatically releases pressure when it
exceeds its safe setting, helping protect the boiler and personnel.
10.What type of heat transfer occurs through direct contact between
molecules?
A. Radiation
B. Conduction
C. Convection
D. Evaporation
Answer: Conduction
Rationale: Conduction transfers heat through direct molecular interaction within
or between materials in contact.
11.What is the purpose of a cooling tower?
A. To heat boiler water
B. To reject heat from condenser water
C. To produce compressed air
D. To remove electrical current
Answer: To reject heat from condenser water
Engineer Examination Practice Exam
2026 | 100 Questions & Answers with
Detailed Rationales | Complete Exam
Prep & Study Guide
1. What is the primary purpose of a preventive maintenance program in a
healthcare facility?
A. To eliminate all equipment failures
B. To reduce unexpected failures and extend equipment life
C. To increase equipment operating temperatures
D. To avoid keeping maintenance records
Answer: To reduce unexpected failures and extend equipment life
Rationale: Preventive maintenance identifies and corrects developing problems
before they cause major failures, improving reliability, safety, and equipment
service life.
2. Which instrument is commonly used to measure electrical current?
A. Voltmeter
B. Ohmmeter
,C. Ammeter
D. Megohmmeter
Answer: Ammeter
Rationale: An ammeter measures electrical current, normally expressed in
amperes.
3. What is the purpose of a circuit breaker?
A. To increase voltage
B. To protect a circuit from excessive current
C. To reduce water pressure
D. To regulate steam temperature
Answer: To protect a circuit from excessive current
Rationale: Circuit breakers interrupt electrical current when an overload or short
circuit creates unsafe conditions.
4. In a steam heating system, what is the primary purpose of a steam trap?
A. To increase steam pressure
B. To remove condensate while retaining steam
C. To add water to the boiler
D. To cool the steam
Answer: To remove condensate while retaining steam
Rationale: Steam traps discharge condensate and non-condensable gases while
preventing useful steam from escaping.
5. What does HVAC stand for?
A. Heating, Ventilation, and Air Conditioning
B. High Voltage Air Control
C. Heating Valve and Cooling
D. Hydraulic Ventilation and Circulation
,Answer: Heating, Ventilation, and Air Conditioning
Rationale: HVAC systems provide temperature control, ventilation, humidity
control, and air movement within buildings.
6. Which component transfers heat from refrigerant to surrounding air in an
air-cooled refrigeration system?
A. Evaporator
B. Compressor
C. Condenser
D. Expansion valve
Answer: Condenser
Rationale: The condenser rejects heat from the refrigerant to the surrounding
air, causing the refrigerant to condense.
7. What is the primary function of a pump?
A. To create electrical voltage
B. To move fluids through a system
C. To remove electrical resistance
D. To generate compressed air
Answer: To move fluids through a system
Rationale: Pumps impart energy to liquids so they can be transported through
piping systems against resistance and elevation differences.
8. What should be done before servicing energized electrical equipment?
A. Increase the load
B. Apply lockout/tagout procedures
C. Remove warning labels
D. Spray the equipment with water
Answer: Apply lockout/tagout procedures
, Rationale: Lockout/tagout isolates hazardous energy and prevents unexpected
energization during maintenance.
9. What is the purpose of a pressure relief valve on a boiler?
A. To increase boiler pressure
B. To prevent excessive pressure buildup
C. To reduce water hardness
D. To improve combustion efficiency
Answer: To prevent excessive pressure buildup
Rationale: A pressure relief valve automatically releases pressure when it
exceeds its safe setting, helping protect the boiler and personnel.
10.What type of heat transfer occurs through direct contact between
molecules?
A. Radiation
B. Conduction
C. Convection
D. Evaporation
Answer: Conduction
Rationale: Conduction transfers heat through direct molecular interaction within
or between materials in contact.
11.What is the purpose of a cooling tower?
A. To heat boiler water
B. To reject heat from condenser water
C. To produce compressed air
D. To remove electrical current
Answer: To reject heat from condenser water
