NCCER Electrical level 2 module 3 Light Concept Questions and Answers
Light Enters the eye through a transparent layer called the - ANS Cornea
Material absorbs the most light - ANS Dark red glazed Bricks
When a filament operates hotter it's life is - ANS Shortened
Instant start l...
NCCER Electrical level 2 module 3 Light
Concept Questions and Answers
Light Enters the eye through a transparent layer called the - ANS Cornea
Material absorbs the most light - ANS Dark red glazed Bricks
When a filament operates hotter it's life is - ANS Shortened
A
Instant start lamps have a - ANS Single pin at each end of the lamp
VI
Metal halide lamps have - ANS Excellent color rendition
TU
A color temperature of what is considered moderate in tone producing a balance
between warmth and coolness - ANS 3,500k
Energy legislation promotes replacing standard incandescent lamps with - ANS LED
IS
and compact fluorescent lamps
Electronic rapid start ballast - ANS Low wattage and longest life available with various
OM
ballast factors and wattage packages for various lamp types
Electronic instant start ballast - ANS Lowest system was in higher system efficiency
lamp life is slightly shorter than rapid start ballast
NA
Troffer - ANS A recessed lighting fixture installed with the opening flush with the
ceiling
Suspended lighting fixtures - ANS hung from a ceiling using a chain aircraft wire cord
JP
or metal stem included in this group are chandeliers
NEC article 411 - ANS Covers lighting systems and their associated components
operating at no more than 30 VAC or 60VDC Must Meet all local code requirements
including those for mounting supporting and grounding live parts exposure, insulation
clearances, supply conductor types, maximum lamp wattages
NEC article 410 - ANS Requirements pertaining to the installation of lighting fixtures
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