Lighting & lamps basics

Which of the following is not part of a typical incandescent lamp?

1. light source

2. lamp base

3. ballast

4. lamp enclosure

Ballast

A lamp with a color temperature of 3800K would be considered:

1. a warm white light

2. a cool white light

3. a “daylight” light

A cool white light

Around what percentage of an incandescent lamps’ power use is converted to heat?

1. 95%

2. 35%

3. 70%

4. 10%

95%

Which lamp type would be most effective in a football stadium?

1. incandescent

2. halogen

3. fluorescent

4. gas discharge

5. led

Gas discharge

Of the following, which lamp type has the highest luminous efficacy?

1. incandescent

2. halogen

3. fluorescent

4. led

LED

A ballast is used to regulate the amount of heat produced by a gas discharge lamp.

1. true

2. false

false

CRI stands for;

1. Color Radiant Illumination

2. color rendering index

3. color reflection intensity

Color Rendering index

An LED lamp would be a good alternative to a fluorescent tube.

1. true

2. false

True

While fluorescent lamps have the most pros, this lamp type has the most cons:

1. incandescent

2. halogen

3. fluorescent

4. gas discharge

5. LED

3. Fluorescent

I will never use the word light bulb around electricians and lighting designers

1. true

2. false

True

illuminance

amount of light that is striking a surface, its measured in footcandles in the US

Luminance

amount of light leaving the object, which our visual system perceives

CRI ( Color Rendering Index)

measures how light source renders all colors, which we want to achieve a good light source to render colors evenly.

Color Temperature

describes the warmth/cool tones with light source. which is measured in Kelvin ( the lower # the warmer the tone.)