Module 4, Lesson 3 Flashcards Preview

Module 4, Lesson 3 > Module 4, Lesson 3 > Flashcards

Flashcards in Module 4, Lesson 3 Deck (32):
1

Fluorescent light characteristics

Most common light source outside of the house, coated in phosphor and a small amount of mercury, and contains cathodes

2

How a fluorescent illuminates

Voltage is applied to the cathodes, electrical arc jumps thje length of the tube, this energizes the phosphorus by ultraviolet light, and produces light

3

How many lumens of light per watt of electricity are consumed

65-75

4

4 types of common fluorescent bases

Bi-pin, single pin, recessed double contact, and compact fluorescent series

5

Shapes of fluorescents

Ring or circular, u-shaped, double-folded, and compact

6

Fluorescent currents are measured in

Milliamps

7

3 main operating currents

Pre-heat, instant-heat, and rapid-heat

8

Fluorescents and incandescents have what in common

Coding systems

9

Coding systems designate what

Color illumination

10

Fluorescent ballast characteristics

Regulates current, generates starting and operating voltage, considered part of the fixture, provides the voltage "kick" to start the lamp called "striking the arc" ", and all have ballast rating codes

11

CBM stands for

Certified Ballast Manufacturer

12

Many compacts have this installed

Ballast

13

Electronic fluorescent ballast characteristics

Good for electrical distributors, new laws of energy requirements, all has to do with energy consumption and better products, little or no noise, lighter, and longer life

14

Fluorescent luminarie characteristics

Sold with ballast, housing, and cover, see a lot in commercial apps

15

Troffer

Fixture that mounts recessed in the ceiling

16

4 categories for recessed fluorescent fixtures

Static, air supply, heat extraction, and combo

17

Fluorescent troffer fixture types

Grid-type, type F, surface mounted, base-bones, open reflector, and wrap-around

18

Grid-type

Lay in for suspended ceiling

19

Type F

Mounted in sheetrock with flanges and wire hinges

20

Surface mounted

Most common

21

Bare-bones

Just has a housing, ballast, and lamp

22

Wrap-around

Actually hung from the ceiling

23

Open reflector

Used in industrial settings where utility is primary consideration

24

What do reflectors provide

A degree in "up-light" or the light reflected from the ceiling

25

What can reflectors be made of

Baked enamel, aluminum, procelian, and plastics

26

2 electronic ballast operating modes

Instant-heat and rapid-heat

27

Ballast power factor

Measurement of how effectively the input current is converted into usable power

28

Define diffusers

Glass or plastic lamp covers in a number of different styles

29

Lenses

Glass of plastic covers that focus on the direct light from of the lamp

30

2 types of plastic lenses

Extruded or injection-molded

31

The most common type of lens

The prismatic type

32

Define louvers

The most sophisticated type of lamp cover