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10 Cards in this Set
- Front
- Back
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Natural ventilation is improved by the use of a roof: 1) Grille 2) Panel 3) Louver 4) Radiator 5) Ventilator |
Ventilator |
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The activated carbon used for absorbing odors can be sometimes reactivated by: 1) Heating 2) Charged with negative ions 3) Cooling 4) Charged with positive ions 5) Washing with water |
Heating |
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Which one of the following air cleaning devices can be used for the removal of gases and vapor? 1) Charcoal absorbers 2) Dry filters 3) Air washers 4) Electronic air cleaners 5) Activated alumina chemisorbent media |
Charcoal absorbers |
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Which of the following are the contaminants suspended in the air? 1. Dust 2. Smoke 3. Fumes 4. Insects 5. Moisture 1) 1, 2, 3, 4 2) 3, 4, 5 3) 1, 3, 5 4) 2, 3, 5 5) 1, 2, 5 |
1, 2, 3, 4 |
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In the past, the most popular method used to provide ventilation in a residence or small building has been by: 1) Maximum air flow system 2) Mechanical ventilation 3) Natural ventilation 4) Electrical ventilation 5) Minimum air flow system |
Maximum air flow system |
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Mechanical filters can be divided into two broad classes: 1) Dry and viscous 2) Throwaway and renewable 3) Wet and dry 4) Rotating and stationary 5) Corrugated and smooth |
Throwaway and renewable |
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Actual ventilation rates may vary per person from: 1) 1.0 m³/min to 1.5 m³/min 2) 0.14 m³/min to 1.5 m³/min 3) 0.5 m³/min to 0.75 m³/min 4) 0.5 m³/min to 0.6 m³/min 5) 0.2 m³/m to 1.2 m³/min |
0.14 m³/min to 1.5 m³/min |
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Ventilation can be divided into two basic methods: 1) Natural and cold air 2) Natural and warmed air 3) Forced and natural 4) Forced and mechanical 5) Mechanical and natural |
Mechanical and natural |
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Activated carbons are the most common way to absorb odors and other objectionable gases. The carbon will absorb these gases up to _____ of its own weight before it has to be replaced. 1) 50% 2) 20% 3) 10% 4) 30% 5) 40% |
20% |
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Electronic air cleaners are divided into two of the following classes: 1. Electrical centrifuge 2. Electrostatic precipitators 3. Electrode - mechanical 4. Charged-media electronic air cleaners 1) 1, 2 2) 3, 4 3) 2, 4 4) 1, 4 5) 1, 3 |
2, 4 |
