Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
41 Cards in this Set
- Front
- Back
|
Most desirable duct size |
Friction allowance depends on shape of duct.
1. Round 1.0 2. Square 1.1 |
|
|
Methods to disinfect water to make potable |
1. Chlorination 2. Ozonation 3. Ultraviolet light |
|
|
Types of sprinkler systems |
1. Precation system - sends water to system after alarm. System then sounds an alarm. Delay allows for action before water damage. 2. Wet- constantly filled with water. Immediate action 3. Dry- compressed air in pipe until alarm sounds. Then immediate action 4. Deluge- like wet system but all heads discharge at same time . Ideal for flammable materials are stored |
|
|
Photoelectric smoke detector |
Pass beam of light when obscured by smoke sounds. Smoldering state** |
|
|
Calculate illuminance |
Back (Definition) |
|
|
Metal halide |
Is a HID high intensity discharge lamp. Different types but only one with specific burning position . *base up. Base down . Horizontal . Universal |
|
|
Power sizes |
1. 120/240 volt ,single phase ideal for residential 2. 120/208 volt , 3 phase ideal for small commercial 3. Higher volt, 3phase for large buildings |
|
|
Blower door |
Fan mounted on door frame . To measure infiltration and leakage |
|
|
Nanometer |
Measures difference in pressure between two spaces |
|
|
Duct blower |
Fan mounted on duct to find leaks |
|
|
Flexible metal conduit |
Use for connecting to motors because it gives with the movement. Also good for where vibration is and impossible straight runs |
|
|
Focusing |
Sound is focused by concave surfaces and directed to a specific part of room |
|
|
Focusing |
Sound is focused by concave surfaces and directed to a specific part of room |
|
|
Creep |
Sound reflected along a curved surface . Sound can be heard along the curve but not across the room. |
|
|
Diffusion |
Opposite of focusing . Sound scattered all around a room by convex surfaces |
|
|
Diffusion |
Opposite of focusing . Sound scattered all around a room by convex surfaces |
|
|
Specular reflection |
Reflection of sound off hard polished surfaces |
|
|
Dead space |
Short reverberation time. Idea for public speaking spaces |
|
|
Dead space |
Short reverberation time. Idea for public speaking spaces |
|
|
Live spaces |
Long reverberations . Ideal for music halls |
|
|
Tone |
Sound composed of a single frequency |
|
|
Chord |
A combination of notes played simultaneously |
|
|
Chord |
A combination of notes played simultaneously |
|
|
Pitch |
Number of complete wave forms per second |
|
|
Types of fire extinguishers |
Class A - combustible materials Class b - flammable gases Class c - electrical fires Class d - combustible metals |
|
|
Calculating cooling load |
Back (Definition) |
|
|
Centrifugal governor |
Sets the brakes and shuts off power. 1st elevator safety action |
|
|
Safety rail clamps |
Wedge against the guide rails and stops car smoothly. 2nd line of defense (elevator safety ) |
|
|
Safety rail clamps |
Wedge against the guide rails and stops car smoothly. 2nd line of defense (elevator safety ) |
|
|
Final limit switches |
If elevator overruns safe limits of travel up or down switches activated to stop the car |
|
|
US banned refrigerants |
Halon CFC |
|
|
Ideal brightness ratio |
1:1/3 between task and the adjacent surroundings |
|
|
Psychometric chart zones |
|
|
|
Power (P) |
Back (Definition)
|
|
|
Well pumps |
1.Submersible - small buildings/residential . Placed below water table and pumps to a pressure tank. 2. Suction: shallow wells 3. Jet "Venturi" - deep wells 4. Turbine- very deep and large |
|
|
Photoelectric cells |
Perimeter security . Beam if broke sounds alarm |
|
|
SEER |
Seasonal energy efficiency ratio
Min US for residential 13 |
|
|
Curtain Board |
"Draft curtain" Smoke movement prohibited |
|
|
Curtain Board |
"Draft curtain" Smoke movement prohibited |
|
|
Fixture units |
Measurement of the amount of water required to operate a plumbing fixture. Add all units for each fixture in building to find total demand and size plumbing pipes |
|
|
Pv cells |
1. Crystalline- produces to most power 2. Polycrystalline - produces less than crystalline but more competitively priced 3. Amorphous - least power produced to can be applied to building materials |
