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Lighting essentials lvl 1 Lesson 5 Questions and Answers
All of the lamp types, except light-emitting diodes
(LEDs), are described by size and shape. Lamp
size is measured in ____ increments. -
ANSWER -1/8"
What is the diameter of a T-12 fluorescent lamp?
- ANSWER -1.5"
Standard incandescent lamps use tungsten
filaments that generate a white light with a color
temperature of about ____ Kelvin. -
ANSWER -2,700
The color rendering index (CRI) of an
incandescent lamp is considered to be ____. -
ANSWER -100
Halogen lamps give off whiter light than standard
incandescent lamps and have a color
temperature of about ____. - ANSWER -
3,000 K
What is the efficacy of a standard incandescent
lamp? - ANSWER -Between 5 and 18 lm/W
What are the major drawbacks of using
incandescent and halogen lamps -
ANSWER -Inefficiency and short life
What is the efficacy of a halogen lamp? -
ANSWER -Between 20 and 35 lm/W
Correctly identify the correct lamp type/ name
with its image - ANSWER -
Which style of incandescent lamp contains an
internal reflector? - ANSWER -"BR" lamp
Which style of incandescent lamp is often called
a "showcase lamp"? - ANSWER -"T" lamp
When referring to parabolic aluminized reflector
(PAR) and mirrored reflector (MR) lamps, the
beam angle represents the angle where the
lamp's cone of light is ____ of its maximum
intensity. - ANSWER -50%
What is the typical beam angle for a flood lamp
(FL)? - ANSWER -30° to 40°
Which lamp was derived from a slide projector
lamp? - ANSWER -"MR" 11 lamp
A(n) ____ starts and regulates power to a
fluorescent lamp. - ANSWER -ballast
Modern fluorescent lamps are identified by a
color name that includes/combines the lamp's
color temperature and efficacy.
True or False - ANSWER -False
Fluorescent lamps can be dimmed by the use of
a(n) ____. - ANSWER -electronic dimming
ballast
Fluorescent lamps are sensitive to temperature.
True or False - ANSWER -True
Which type of fluorescent lamp starting method is
preferred if the lamps are to be frequently
switched on and off? - ANSWER -
Programmed rapid start
