LED's are 3 to 4 times as energy efficient as incandescents (T/F)
true
Fluorescent lamps cannot be dimmed (T/F)
false
when specifying an LED and Fluorescent you need to look at the CRI and the color temperature (T/F)
true
the color of incandescent is typically 3000 k (T/F)
false
Wall grazing is a lighting technique used to bring out textures (T/F)
true
The IES is an organization that established the appropriate amount of light for each space(T/F)
True
Restaurants are typically lit with bright even and diffused lighting to create a romantic atmosphere (T/F)
false
low voltage lamps usually run at how many volts?
12 volts
At the reception desk there is a large vase of flowers, what is the best way to light the flowers?
Par light or MR16
IF you notice that a fluorescent light casts a green glow what does it indicate?
lamps with a low CRI is used
You find a light fixture you like an the tare sheet indicates that it has 650 lumens, what does that mean?
How much light it emitted from the fixture
Increasing the light on the wall does what to ones perception of a room?
increases the speciousness
when selecting a down light you need to specify
all of the above
- housing (IC rated title 24)
- lamp source
- reflector- glare
which source doesnt require a transformer or a ballast ( has a dimmer that matches it)
A-lamp
When designing an office you will need to achieve 20 to 50 __________ of light
foot candles
A T-8 bulb is _________ shape and _________ in diameter
- tube
- 8 1/8th of an inch
light with a lamp with a 2700k appears __________ than 3000k
warmer
name 3 examples where glare can be problematic
driving
elderly people
medical procedures
lumens
Brightness
average 8000 lumens and 60 watts
how many foot candles needed for an emergency
2
foot candles
average amount of brightness on the ground