Electrical Wiring Module 3 Exam Questions with Verified Answers (100% Pass)
optic nerve - Answers carries light to neural impulses from the eye to the brain
light energy that is not absorbed by and object can be - Answers both reflected from and transmitted through the object
when all the wavele...
optic nerve - Answers carries light to neural impulses from the eye to the brain
light energy that is not absorbed by and object can be - Answers both reflected from and transmitted
through the object
when all the wavelengths of the light spectrum are presented to the eye in nearly equal proportions, the
color or the light is - Answers white
the resistance of a tungsten filament is - Answers much higher when the lamp is turned on
the filament of a tungsten-halogen lamp is encased in a capsule containing - Answers iodine or bromine
gas
the diameter of a 4', T-12 fluorescent lamp is - Answers 1 1/2"
during operation, a high- output (HO) fluorescent lamp typically has a current draw of - Answers 800 mA
- 1,000 mA
the type of high-intensity discharge (HID) lamp that uses the oldest HID technology is the - Answers
mercury vapor lamp
A light that is considered warm in tone is produced by lamps with color temperatures - Answers 3,000k
to improve both ballast efficiency and lamp efficacy, an electronic ballast typically operates the
connected fluorescent lamps a a frequency of - Answers 20Hz - 50Hz
which variation of constant-wattage autotransformer (CWA) ballast is used with metal halide lamps? -
Answers PLA, peaked lead auto-regulator
Most code requirements governing the installation of lighting fixtures, lampolder, and lamps are
covered in - Answers NEC Article 410
- Answers 18"(450mm) and 6' (1.8m)
fixture whips used to connect form a junction box mounted above the ceiling to a fixture installed in a
suspended citing must have a minimum length of - Answers 6'-0 (1.8m) 6'-6"(1.9m)
suspended lighting fixtures used in commercial and industrial building are supported by the - Answers
fixture canopy
when installed on a wall, the track for track lighting must be a minimum of - Answers 5'-0 (1.5m) above
the finished floor
the NEC requires that all fixtures be grounded if they - Answers have exposed metal parts
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