BC Ch.7 Defintions
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Questions and Answers

What is the primary function of a boiler?

  • To create steam (correct)
  • To distribute electricity
  • To cool air
  • To circulate air throughout a building
  • What is a cable tray used for?

  • Covering long distances to protect wiring in large commercial and industrial buildings (correct)
  • Storing electrical cables
  • Distributing electricity throughout a building
  • Cooling refrigerants in HVAC systems
  • What does a condenser do in a refrigeration system?

  • Releases heat to the surrounding area (correct)
  • Distributes electricity throughout a building
  • Mixes ammonia and water
  • Absorbs heat from the surrounding area
  • What is a conductor in an electrical system?

    <p>The metal (copper or aluminum) that distributes electricity throughout the building</p> Signup and view all the answers

    What is the purpose of conduit in an electrical system?

    <p>To protect exposed wiring from physical damage</p> Signup and view all the answers

    What is a diffusion system used for?

    <p>To mix ammonia and water, diluting the ammonia concentration before discharge</p> Signup and view all the answers

    What system controls the distribution of emergency power throughout a building?

    <p>Electrical service panel</p> Signup and view all the answers

    What is the primary function of a refrigerant in a cooling system?

    <p>To absorb and release heat</p> Signup and view all the answers

    What happens to elevators during Phase I operation in a fire emergency?

    <p>Elevators are recalled to the first floor lobby</p> Signup and view all the answers

    Which of the following is a responsibility of HVAC systems?

    <p>Heating, ventilating, and air conditioning</p> Signup and view all the answers

    What type of elevator is designed for evacuating occupants in tall buildings?

    <p>Occupant evacuation elevator</p> Signup and view all the answers

    What is the role of Phase II elevator operation during a fire emergency?

    <p>Control by fire fighters using a special key</p> Signup and view all the answers

    What does the evaporator do in a refrigeration system?

    <p>Cools the surrounding area by eliminating heat</p> Signup and view all the answers

    What component of the refrigeration system is responsible for rejecting heat?

    <p>Condenser</p> Signup and view all the answers

    What is the main purpose of a cable tray in a building's electrical system?

    <p>To support and protect electrical wiring</p> Signup and view all the answers

    What type of power does standby power provide during a power outage?

    <p>Power for critical life-safety features</p> Signup and view all the answers

    Study Notes

    Boilers and HVAC Systems

    • Boilers primarily create steam for heating purposes in buildings.
    • HVAC systems encompass heating, ventilation, and air conditioning to maintain indoor air quality and comfort.

    Electrical Infrastructure

    • Cable trays protect and support wiring over long distances in large commercial and industrial buildings.
    • Conductors, typically made of copper or aluminum, distribute electricity throughout a building.
    • Conduits protect exposed wiring from physical damage, ensuring electrical safety.

    Refrigeration Systems

    • Condensers release heat to the surrounding area as part of the refrigeration cycle.
    • Evaporators cool the surrounding area by absorbing heat from the refrigerant.
    • Refrigerants are crucial for absorbing and releasing heat in refrigeration systems.

    Elevator Operations and Safety

    • Occupant evacuation elevators are designed for buildings exceeding 420 ft (128 m) in height, facilitating safe exits during emergencies.
    • Phase I elevator operation involves recalling elevators to the first floor lobby upon smoke detector activation.
    • Phase II allows fire fighters to control elevators using special keys, enhancing the efficiency of rescue operations.
    • Phase III involves occupants using elevators for self-evacuation before fire fighter assistance arrives.

    Emergency Power Systems

    • Emergency power provides electricity for critical life-safety features, such as fire pumps and alarm systems, during outages.
    • Standby power supports less critical building functions when the main power source fails.

    Electrical Control Systems

    • Electrical service panels manage circuit conductors and power supply, centrally controlling the electrical system's safety and functionality.
    • Cable trays and conduits play essential roles in protecting and organizing electrical wiring within a building.

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    Test your knowledge on HVAC systems and functions of equipment like boilers and cable trays with this quiz. Answer multiple-choice questions that explore important aspects of building systems. Perfect for students and professionals in the field.

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