R.W Chap. 17 Quiz

A class ________ ballast has a built-in thermal protection unit that opens the lighting circuit if the ballast temperature exceeds a specified level.

• B

• L

• P

• T

Tags

NGSS.HS-PS3-4

A Type IC recessed incandescent or LED light fixture may be ________ thermal insulation.

• kept at least 2" from

• completely covered by

• kept at least 3" from

• kept at least 1/2"

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A ________ is defined by the NEC® as a complete lighting unit consisting of a lamp or lamps together with the parts designed to distribute the light, to position and protect the lamps and ballast, and to connect the lamps to the power supply.

• fixture

• sconce

• luminaire

• lamp holder

Tags

CCSS.RI.11-12.3

CCSS.RI.11-12.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

CCSS.RI.8.5

Lamp manufacturers are concerned with which of the following factors?

• Color temperature

• Color rendering

• Lamp efficacy

• All of the above

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-1

The amount of electrical power used by a lamp is measured in (a)   .

Which of the following lamp types is the most inefficient?

• Incandescent lamps
• Halogen lamps
• LED lamps
• Fluorescent lamps

Which of the following ballasts may be used with fluorescent dimmers?

• Preheat

• Rapid start

• Instant start

• None of the above

Which of the following lamp types require the use of phosphors to produce light?

• Metal halide

• Sodium vapor

• Incandescent

• Fluorescent

Which of the following is not considered one of the three main independent testing laboratories for electrical lighting fixtures?

• National Electrical Manufacturers Association

• Underwriters Laboratories

• Canadian Standards Association

• Electrical Testing Laboratories

The measure of the color appearance of a light source that helps describe the apparent “warmth” or “coolness” of the light source is called (a)   .