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4B practice exam › Unit B-10

4B B-10: HVAC Fundamentals for Facility Operators

54 practice questions in this unit. Each practice set pulls 20 at a time, so you keep seeing new questions as you go.

What this unit covers: Air conditioning and humidification, air movement, ventilation and filters, ducts and coils.

Exam theme: Refrigeration, HVAC and heating. Commonly reported share of the 100-question 4B exam: about 7 questions (unofficial; SOPEEC and ABSA do not publish per-unit counts). See the 4B exam breakdown.

1 free 4B B-10 question, explained

Original exam-style questions written to the public syllabus, from our free public sample. They are not questions from a real exam.

1. Effective temperature is an index of comfort. Which combination of conditions does it account for?

  • A. Dry-bulb temperature, relative humidity, and air movement
  • B. Wet-bulb temperature, barometric pressure, and air movement
  • C. Relative humidity, air cleanliness, and outdoor air temperature
  • D. Dry-bulb temperature, dew point, and the cleanliness of the air
Show the answer and explanation

Answer: A. Effective temperature is described as a measure of comfort that combines the effects of dry-bulb temperature, relative humidity, and air movement; it is not an actual measurable temperature.

Question ID KE-B10-C01-Q001 · Unit B-10: HVAC Fundamentals for Facility Operators · Report an error

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← B-9: Basic Concepts of Compression and Absorption Refrigeration · B-11: Building Environmental Systems and Control →

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