Module 4, Lesson 3

Question 1

Fluorescent light characteristics

Answer 1

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

Question 2

How a fluorescent illuminates

Answer 2

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

Question 3

How many lumens of light per watt of electricity are consumed

Answer 3

65-75

Question 4

4 types of common fluorescent bases

Answer 4

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

Question 5

Shapes of fluorescents

Answer 5

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

Question 6

Fluorescent currents are measured in

Answer 6

Milliamps

Question 7

3 main operating currents

Answer 7

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

Question 8

Fluorescents and incandescents have what in common

Answer 8

Coding systems

Question 9

Coding systems designate what

Answer 9

Color illumination

Question 10

Fluorescent ballast characteristics

Answer 10

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

Question 11

CBM stands for

Answer 11

Certified Ballast Manufacturer

Question 12

Many compacts have this installed

Answer 12

Ballast

Question 13

Electronic fluorescent ballast characteristics

Answer 13

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

Question 14

Fluorescent luminarie characteristics

Answer 14

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

Question 15

Troffer

Answer 15

Fixture that mounts recessed in the ceiling

Question 16

4 categories for recessed fluorescent fixtures

Answer 16

Static, air supply, heat extraction, and combo

Question 17

Fluorescent troffer fixture types

Answer 17

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

Question 18

Grid-type

Answer 18

Lay in for suspended ceiling

Question 19

Type F

Answer 19

Mounted in sheetrock with flanges and wire hinges

Question 20

Surface mounted

Answer 20

Most common

Question 21

Bare-bones

Answer 21

Just has a housing, ballast, and lamp

Question 22

Wrap-around

Answer 22

Actually hung from the ceiling

Question 23

Open reflector

Answer 23

Used in industrial settings where utility is primary consideration

Question 24

What do reflectors provide

Answer 24

A degree in “up-light” or the light reflected from the ceiling

Question 25

What can reflectors be made of

Answer 25

Baked enamel, aluminum, procelian, and plastics

Question 26

2 electronic ballast operating modes

Answer 26

Instant-heat and rapid-heat

Question 27

Ballast power factor

Answer 27

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

Question 28

Define diffusers

Answer 28

Glass or plastic lamp covers in a number of different styles

Question 29

Lenses

Answer 29

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

Question 30

2 types of plastic lenses

Answer 30

Extruded or injection-molded

Question 31

The most common type of lens

Answer 31

The prismatic type

Question 32

Define louvers

Answer 32

The most sophisticated type of lamp cover