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40 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Light fixtures are classified by |
The way they distribute light |
001 |
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Which light classification directs from 40 to 60 percent of its light upward above the area to be lighted? |
General diffusing |
001 |
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Which classification of light fixtures directs all its light so that the entire ceiling and upper side walls become the light source? |
Indirect |
001 |
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What is the unit of measurement for lumens per square meter? |
Lux. |
001 |
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What is the unit of measurement for lumens per square meter? |
Lux. |
001 |
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The efficiency range of lamp is measured in lumens per |
Watt. |
001 |
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What is the unit of measurement for lumens per square meter? |
Lux. |
001 |
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The efficiency range of lamp is measured in lumens per |
Watt. |
001 |
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Incandescent lamps have efficiencies ranging from |
6 to 24 lumens per Watt. |
002 |
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What is the diameter of a T8 lamp? |
8/8 inch. |
002 |
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What is the diameter of a T8 lamp? |
8/8 inch. |
002 |
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What frequency should you expect to find in electronic ballasts used in fluorescent lighting systems? |
25,000 to 40,000 Hz. |
002 |
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What is the diameter of a T8 lamp? |
8/8 inch. |
002 |
|
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What frequency should you expect to find in electronic ballasts used in fluorescent lighting systems? |
25,000 to 40,000 Hz. |
002 |
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What is used to power a light emitting diode (LED) array in a non-integrated LED fixture? |
LED driver |
002 |
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What is a disadvantage of high-intensity discharge (HID) lamps? |
Restrike time |
003 |
|
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What are the voltages that the 150-watt high-pressure sodium (HPS) lamp comes in? |
55 and 100 volts |
003 |
|
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What color light is associated with high-pressure sodium (HPS) lamps? |
Golden |
003 |
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Which type of fixture is installed by laying it into the grid of a suspended ceiling? |
Troffer |
004 |
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Which type of fixture is installed by laying it into the grid of a suspended ceiling? |
Troffer |
004 |
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When installing an octagon box for a new flush mount fixture what is important to ensure that the mounting method does not fail? |
Box is sized to support the fixture |
004 |
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Which type of fixture is installed by laying it into the grid of a suspended ceiling? |
Troffer |
004 |
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When installing an octagon box for a new flush mount fixture what is important to ensure that the mounting method does not fail? |
Box is sized to support the fixture |
004 |
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What are the types of phase cut dimmers? |
Forward and reverse |
005 |
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Which type of fixture is installed by laying it into the grid of a suspended ceiling? |
Troffer |
004 |
|
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When installing an octagon box for a new flush mount fixture what is important to ensure that the mounting method does not fail? |
Box is sized to support the fixture |
004 |
|
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What are the types of phase cut dimmers? |
Forward and reverse |
005 |
|
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How does a phase cut dimmer operate? |
The root mean square (RMS) voltage is reduced by turning off a portion of the input waveform |
005 |
|
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Which type of fixture is installed by laying it into the grid of a suspended ceiling? |
Troffer |
004 |
|
|
When installing an octagon box for a new flush mount fixture what is important to ensure that the mounting method does not fail? |
Box is sized to support the fixture |
004 |
|
|
What are the types of phase cut dimmers? |
Forward and reverse |
005 |
|
|
How does a phase cut dimmer operate? |
The root mean square (RMS) voltage is reduced by turning off a portion of the input waveform |
005 |
|
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What is the light output of a fixture using a 0-10V ballast with 10 volts on the low voltage control circuit? |
100% |
005 |
|
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What type of light fixture is typically used to illuminate aircraft on the parking apron? |
1000W-1500W Hugh intensity discharge (HID) floodlight |
006 |
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In an incandescent lamp, how much consumed energy is lost in the form of heat? |
90% |
006 |
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In an incandescent lamp, how much consumed energy is lost in the form of heat? |
90% |
006 |
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What is used in high discharge (HID) lamps to limit current as the lamp heats up? |
Ballast |
006 |
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In an incandescent lamp, how much consumed energy is lost in the form of heat? |
90% |
006 |
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What is used in high discharge (HID) lamps to limit current as the lamp heats up? |
Ballast |
006 |
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What letter represents the American National Standards Institute’s special designation code for high-pressure sodium (HPS) lamps? |
S |
006 |
