NCIDQ | LIGHTING Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
Lamp The correct term for the manufactured unit
that
produces light is a LAMP.
Do not confuse it with FIXTURE.
common lamps Incandescent
Halogen
Fluorescent
CFL or Compact Fluorescent Lamp
Metal Halide
High Pressure Sodium
Specialty
Color Rendering Of Common Incandescent 100%
Lamps Halogen 100%
Fluorescent 60% up to 92%
Metal Halide 65% up to 92%
High Pressure Sodium 21% up to 85%
,Color Temperature is a measure of the apparent color of the
light
source (color appearance).
It is expressed
in Kelvin; the lower the color temperature,
the
warmer the apparent color, and the higher
the
color temperature, the cooler the apparent
color.
(a 2800K source will be warmer than a
600K
source.)
Light Source + Color Temperature Clear blue sky 12,000
Overcast sky 7,000
Sunlight 5,000
Metal Halide 4,500
Solux 3,500 to 4,700
Halogen 3,000
House Lamp 2,500
Candle Flame 1,500
Consider and compare the Cost
following Life
when making an informed choice Wattage
of Output (candela, candle power, or lumens)
lamp CRI
type: Color temperature
, Ambient lighting general, overall illumination that:
• Enables one to move about easily and
safely
• Defines the space
• Makes the room seem larger
• Makes the space more comfortable by
balancing
the brightness of surfaces and objects in
the field
of view.
General lighting that brightens objects and
surfaces in the lower part of the room
creates a
feeling of warmth and intimacy, whereas
indirect
lighting, directed to the upper walls and
ceiling,
gives the space a cooler, quieter, more
spacious
look.
Task Lighting light to work by
Task lighting illuminates areas where work
is
performed
Paper work and reading generally require
plentiful,
well-diffused light coming from
over the shoulder or from the side. For
kitchen and
hobby tasks, a concentrated light from
above
usually
works best.
Answers with Verified Solutions | Latest
Updated 2026
Lamp The correct term for the manufactured unit
that
produces light is a LAMP.
Do not confuse it with FIXTURE.
common lamps Incandescent
Halogen
Fluorescent
CFL or Compact Fluorescent Lamp
Metal Halide
High Pressure Sodium
Specialty
Color Rendering Of Common Incandescent 100%
Lamps Halogen 100%
Fluorescent 60% up to 92%
Metal Halide 65% up to 92%
High Pressure Sodium 21% up to 85%
,Color Temperature is a measure of the apparent color of the
light
source (color appearance).
It is expressed
in Kelvin; the lower the color temperature,
the
warmer the apparent color, and the higher
the
color temperature, the cooler the apparent
color.
(a 2800K source will be warmer than a
600K
source.)
Light Source + Color Temperature Clear blue sky 12,000
Overcast sky 7,000
Sunlight 5,000
Metal Halide 4,500
Solux 3,500 to 4,700
Halogen 3,000
House Lamp 2,500
Candle Flame 1,500
Consider and compare the Cost
following Life
when making an informed choice Wattage
of Output (candela, candle power, or lumens)
lamp CRI
type: Color temperature
, Ambient lighting general, overall illumination that:
• Enables one to move about easily and
safely
• Defines the space
• Makes the room seem larger
• Makes the space more comfortable by
balancing
the brightness of surfaces and objects in
the field
of view.
General lighting that brightens objects and
surfaces in the lower part of the room
creates a
feeling of warmth and intimacy, whereas
indirect
lighting, directed to the upper walls and
ceiling,
gives the space a cooler, quieter, more
spacious
look.
Task Lighting light to work by
Task lighting illuminates areas where work
is
performed
Paper work and reading generally require
plentiful,
well-diffused light coming from
over the shoulder or from the side. For
kitchen and
hobby tasks, a concentrated light from
above
usually
works best.
