CHFM MAINTENANCE & OPERATIONS EXAM QUESTIONS ANSWERED CORRECTLY LATEST UPDATE
2026
high-rise building Must be fully sprinkled by when? - Answers Within 12 years of adoption of LSC
Fire extinguishers provided for the purpose of cooking use what class? - Answers K class (NFPA 10)
Fire Eye on a boiler - Answers A sensor to verify the flame
Why do you blow-down a boiler? - Answers To remove sediment build up
What type of valve on a boiler is used for blow-down? - Answers Knife
What type of valve are commonly used in steam systems? - Answers Gate Valve
What are the 2 types of stacks most commonly used on a boiler? - Answers Natural and induced
Transformers are used to - Answers increase or decrease voltage
What regulates resistance? - Answers Transformer reduces current by using resistance
How many degrees apart are the phases in the 3 phases of electricity? - Answers 120 degrees
Standard colors for 220v, 3Ph circuit? - Answers Black, Red, Blue (BRB)
Standard colors for 480v, 3ph circuit - Answers Brown, Orange, Yellow (BOY)
Delta Type of circuit - Answers AC (Alternating Current)
12,000 BTUs - Answers A ton of cooling
System of measuring refrigeration - Answers BTU
1kW to BTU - Answers 3412 BTUs
A gallon of water weights? - Answers approx 8.33 lbs
The Polarity of a Stator Pole is fixed (T of F) - Answers True
Examples of positive pressure rooms are? - Answers OR, Delivery Rooms, Trauma Rooms, pharmacy,
Labs, surgical sterile supply, rooms, clean rooms
ER waiting rooms, radiology waiting rooms, soiled rooms are examples of what? - Answers Negative
pressure rooms
ICRA stands for? - Answers Infection Control Risk Assessment
Minimum number of air exchanges per hour in an autopsy room? - Answers 12 air exchanges
minimum 2 outdoor
AII stands for? - Answers Airborne Infection Isolation
oxygen E cylinder holds how much - Answers approx 23cu
Maximum cubic feet of oxygen in a smoke compartment? - Answers 300 cu.
Medical gases are heavier than air (T or F) - Answers True, therefore ventilation must be from the
ground level
Nosocomial infections are - Answers hospital acquired infections (Also HAI)
A pressure check should be performed after any HVAC system is opened. T or F - Answers True
What does a pressure relief valve do? - Answers Discharge pressure once the designated limit is
reached
What do check valves do? - Answers prevent backflow in system
Three basic types of check valves. - Answers Swing, butterfly, lift check
Pump Classifications - Answers single stage, multistage, open impeller
What does HEPA stand for? - Answers high-efficiency particulate air
What does RTU stand for? - Answers Roof Top Unit
What does VAV stand for? - Answers Variable Air Volume
HVAC systems - Answers Heating, ventilation, and air conditioning systems.
HVAC systems deliver volumes of air in what unit of measure? - Answers cubic feet per minute (CFM)
most common type of chiller in healthcare? - Answers Compression and absorption
Where must a medical gas zone valve box be located - Answers in plain view (NFPA 99) Chapter 5
After power interruption emergency generators must start in how many seconds? - Answers 10 (NFPA
110)
2026
high-rise building Must be fully sprinkled by when? - Answers Within 12 years of adoption of LSC
Fire extinguishers provided for the purpose of cooking use what class? - Answers K class (NFPA 10)
Fire Eye on a boiler - Answers A sensor to verify the flame
Why do you blow-down a boiler? - Answers To remove sediment build up
What type of valve on a boiler is used for blow-down? - Answers Knife
What type of valve are commonly used in steam systems? - Answers Gate Valve
What are the 2 types of stacks most commonly used on a boiler? - Answers Natural and induced
Transformers are used to - Answers increase or decrease voltage
What regulates resistance? - Answers Transformer reduces current by using resistance
How many degrees apart are the phases in the 3 phases of electricity? - Answers 120 degrees
Standard colors for 220v, 3Ph circuit? - Answers Black, Red, Blue (BRB)
Standard colors for 480v, 3ph circuit - Answers Brown, Orange, Yellow (BOY)
Delta Type of circuit - Answers AC (Alternating Current)
12,000 BTUs - Answers A ton of cooling
System of measuring refrigeration - Answers BTU
1kW to BTU - Answers 3412 BTUs
A gallon of water weights? - Answers approx 8.33 lbs
The Polarity of a Stator Pole is fixed (T of F) - Answers True
Examples of positive pressure rooms are? - Answers OR, Delivery Rooms, Trauma Rooms, pharmacy,
Labs, surgical sterile supply, rooms, clean rooms
ER waiting rooms, radiology waiting rooms, soiled rooms are examples of what? - Answers Negative
pressure rooms
ICRA stands for? - Answers Infection Control Risk Assessment
Minimum number of air exchanges per hour in an autopsy room? - Answers 12 air exchanges
minimum 2 outdoor
AII stands for? - Answers Airborne Infection Isolation
oxygen E cylinder holds how much - Answers approx 23cu
Maximum cubic feet of oxygen in a smoke compartment? - Answers 300 cu.
Medical gases are heavier than air (T or F) - Answers True, therefore ventilation must be from the
ground level
Nosocomial infections are - Answers hospital acquired infections (Also HAI)
A pressure check should be performed after any HVAC system is opened. T or F - Answers True
What does a pressure relief valve do? - Answers Discharge pressure once the designated limit is
reached
What do check valves do? - Answers prevent backflow in system
Three basic types of check valves. - Answers Swing, butterfly, lift check
Pump Classifications - Answers single stage, multistage, open impeller
What does HEPA stand for? - Answers high-efficiency particulate air
What does RTU stand for? - Answers Roof Top Unit
What does VAV stand for? - Answers Variable Air Volume
HVAC systems - Answers Heating, ventilation, and air conditioning systems.
HVAC systems deliver volumes of air in what unit of measure? - Answers cubic feet per minute (CFM)
most common type of chiller in healthcare? - Answers Compression and absorption
Where must a medical gas zone valve box be located - Answers in plain view (NFPA 99) Chapter 5
After power interruption emergency generators must start in how many seconds? - Answers 10 (NFPA
110)
