APPA CERTIFIED EDUCATIONAL FACILITIES
PROFESSIONAL (CEFP) FINAL EXAM REAL EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS /
ALREADY GRADED A+ (MOST RECENT!!)
SECTION 1: HVAC AND MECHANICAL SYSTEMS
1. The three major types of chiller systems most commonly used in central power
plants today include centrifugal, reciprocating, and - ANSWER - absorption
2. The primary refrigerant used in a centrifugal chiller is typically - ANSWER - R-
134a or R-1233zd
3. A chiller's efficiency is measured by kilowatts per ton of refrigeration, with a
lower number indicating - ANSWER - higher efficiency
4. The component in a vapor compression chiller that reduces the pressure of the
liquid refrigerant is the - ANSWER - expansion valve
5. Absorption chillers are often powered by steam, hot water, or - ANSWER
- natural gas
6. Two main categories of boiler types are fire tube boilers and - ANSWER
- water tube boilers
7. The maximum allowable working pressure (MAWP) of a boiler is determined
by the - ANSWER - American Society of Mechanical Engineers (ASME) code
8. A boiler's burner management system is primarily responsible for - ANSWER
- safely controlling fuel and air mixtures during startup and operation
9. The device that removes dissolved gases from boiler feedwater to prevent
corrosion is a - ANSWER - deaerator
10. The three pass design in a fire tube boiler refers to - ANSWER - the number
of times combustion gases travel through the boiler before exiting
11. The recommended pH range for boiler water to minimize corrosion is typically
- ANSWER - 8.5 to 9.5
, 12. A cooling tower's approach temperature is defined as the difference between -
ANSWER - cold water temperature and ambient wet bulb temperature
13. Open circulating systems for cooling towers are subject to problems such as
scale, corrosion, slime, and - ANSWER - algae
14. The term "blowdown" in a cooling tower refers to - ANSWER - removal of
concentrated water to control dissolved solids
15. Cooling tower fill media serves the primary purpose of - ANSWER
- maximizing water to air contact surface area
16. The drift eliminators in a cooling tower are designed to - ANSWER - prevent
water droplets from escaping the tower with exhaust air
17. Variable frequency drives (VFDs) on chiller compressors improve efficiency
by - ANSWER - matching compressor speed to load requirements
SECTION 2: PIPING AND DISTRIBUTION SYSTEMS
18. Four of the most common piping materials for water distribution systems for
direct burial are polyvinyl chloride PVC, polyethylene PE, ductile iron DI, and -
ANSWER - black iron pipe
19. The primary disadvantage of galvanized steel pipe for domestic water systems
is - ANSWER - susceptibility to internal corrosion over time
20. CPVC piping is commonly specified for hot water distribution because -
ANSWER - it withstands higher temperatures than standard PVC
21. The insulation material with the highest R-value per inch for steam distribution
piping is - ANSWER - cellular glass or mineral wool
22. Cathodic protection is used on buried metal piping to prevent - ANSWER
- galvanic corrosion
23. A piping stress analysis is most critical when designing - ANSWER - high
temperature steam systems
24. The recommended minimum burial depth for water piping in freezing climates
is - ANSWER - below the frost line (typically 36-48 inches)
PROFESSIONAL (CEFP) FINAL EXAM REAL EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS /
ALREADY GRADED A+ (MOST RECENT!!)
SECTION 1: HVAC AND MECHANICAL SYSTEMS
1. The three major types of chiller systems most commonly used in central power
plants today include centrifugal, reciprocating, and - ANSWER - absorption
2. The primary refrigerant used in a centrifugal chiller is typically - ANSWER - R-
134a or R-1233zd
3. A chiller's efficiency is measured by kilowatts per ton of refrigeration, with a
lower number indicating - ANSWER - higher efficiency
4. The component in a vapor compression chiller that reduces the pressure of the
liquid refrigerant is the - ANSWER - expansion valve
5. Absorption chillers are often powered by steam, hot water, or - ANSWER
- natural gas
6. Two main categories of boiler types are fire tube boilers and - ANSWER
- water tube boilers
7. The maximum allowable working pressure (MAWP) of a boiler is determined
by the - ANSWER - American Society of Mechanical Engineers (ASME) code
8. A boiler's burner management system is primarily responsible for - ANSWER
- safely controlling fuel and air mixtures during startup and operation
9. The device that removes dissolved gases from boiler feedwater to prevent
corrosion is a - ANSWER - deaerator
10. The three pass design in a fire tube boiler refers to - ANSWER - the number
of times combustion gases travel through the boiler before exiting
11. The recommended pH range for boiler water to minimize corrosion is typically
- ANSWER - 8.5 to 9.5
, 12. A cooling tower's approach temperature is defined as the difference between -
ANSWER - cold water temperature and ambient wet bulb temperature
13. Open circulating systems for cooling towers are subject to problems such as
scale, corrosion, slime, and - ANSWER - algae
14. The term "blowdown" in a cooling tower refers to - ANSWER - removal of
concentrated water to control dissolved solids
15. Cooling tower fill media serves the primary purpose of - ANSWER
- maximizing water to air contact surface area
16. The drift eliminators in a cooling tower are designed to - ANSWER - prevent
water droplets from escaping the tower with exhaust air
17. Variable frequency drives (VFDs) on chiller compressors improve efficiency
by - ANSWER - matching compressor speed to load requirements
SECTION 2: PIPING AND DISTRIBUTION SYSTEMS
18. Four of the most common piping materials for water distribution systems for
direct burial are polyvinyl chloride PVC, polyethylene PE, ductile iron DI, and -
ANSWER - black iron pipe
19. The primary disadvantage of galvanized steel pipe for domestic water systems
is - ANSWER - susceptibility to internal corrosion over time
20. CPVC piping is commonly specified for hot water distribution because -
ANSWER - it withstands higher temperatures than standard PVC
21. The insulation material with the highest R-value per inch for steam distribution
piping is - ANSWER - cellular glass or mineral wool
22. Cathodic protection is used on buried metal piping to prevent - ANSWER
- galvanic corrosion
23. A piping stress analysis is most critical when designing - ANSWER - high
temperature steam systems
24. The recommended minimum burial depth for water piping in freezing climates
is - ANSWER - below the frost line (typically 36-48 inches)
