Lighting Quiz Flashcards
A _______ bulb uses a ballast to ignite mercury vapor gas that emits UV light when electricity passes through it.
fluorescent
A series circuit is most common in a standard lighting circuit. T/F
False
Disregarding exceptions , liquid tight flexible metal conduit (LFMC) shall be securely fastened in place within _____ of each box, cabinet, or other conduit termination.
12 in
The standard base for most common lights bulbs is a Mogul base. T/F
False
______ are the unit to measure the temperature of a light.
Kelvin
An ________ bulb uses a filament that heats up and produces light when electricity passes through it.
incandescent
HID stands for what?
high intensity discharge
LEDs use drivers, while fluorescent lighting uses a _____ to regulated the current to prevent lamp from burning up.
ballast
A ______ converts AC to DC while a ______ converts DC to AC.
rectifier, inverter
The purpose of the NEC is _________________________.
to provide safeguards to protect people and property from the hazards of electricity
An LED works by passing electric current through a semiconductor material, causing protons and holes to recombine at the junction, releasing energy in the form of light photons. T/F
False (electrons not protons)
The amount of light falling on the surface is known as ________ .
Illuminance
Which fluorescent tube was invented first?
T12
What article in the NEC covers Luminaires?
410
A ______ is a device that converts light into electricity. It operated on a dusk to dawn switch that is used in conjunction with contactors.
photocell
What are the two types of contactors?
mechanical, electrical
Determine the amperage of a 400W light at 208VAC?
1.92
