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7 Cards in this Set
- Front
- Back
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Which of the following statements about multizone systems is true? 1) When the hot deck is fully opened the cold deck is fully closed 2) All of the above 3) The dampers are out of phase by 10°C 4) The cooling coils are installed in-line 5) The system cannot operate a humidifier |
When the hot deck is fully opened the cold deck is fully closed |
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This type of system works well in smaller buildings with multi-zone layouts. It provides good control of room temperature on a year round basis but is limited by the number of zones and the space needed for the supply ducts. 1) A high velocity terminal reheat system 2) A low velocity terminal reheat system 3) A roof top unit 4) A multi-zone system 5) A dual duct system |
A multi-zone system |
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Which of the following statements about central air conditioning systems is false? 1) The central system is able to utilise large central equipment with high efficiency and low initial cost 2) Unitary systems are able to control noise and vibration better than central systems 3) Air is conditioned in the main mechanical room and distributed by duct work 4) All the major equipment in central systems is located in a central mechanical room in the building 5) Central systems are used in large buildings |
Unitary systems are able to control noise and vibration better than central systems |
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Filters are required to remove contaminants from _____ and _____ air before it is introduced into the building. 1) Recycled, outside 2) Inlet, exhaust 3) Supply, outside 4) Outside, return 5) Return, supply |
Recycled, outside |
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When water is used in heating coils, energy can be saved by: 1) Preheating the water with the boiler exhaust gases 2) Shutting of the water pump when the upper air temperature is reached 3) Adjusting the water temperature setpoint according to the outside air temperature 4) Eliminating water leakage from the coil 5) Using a steam humidifier thus reducing the amount of water from the coil |
Adjusting the water temperature setpoint according to the outside air temperature |
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Which of the following is not meant for multi-zone usage? 1) A multi-zone system 2) A low velocity terminal reheat system 3) A high velocity terminal reheat system 4) A roof top unit 5) A dual duct system |
A roof top unit |
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The main categories of building HVAC systems include: 1. Unitary 2. Central 3. Combined 4. Window 5. Forced air 1) 1, 2, 3, 4, 5 2) 1, 2, 3, 4 3) 1, 2, 3, 5 4) 2, 3, 5 5) 1, 2, 3 |
1, 2, 3 |
