CJD Lighting Design & Application 3

Question 1

A client's dining room has an 8-foot ceiling. At what height should a chandelier typically be hung above the dining table surface?

Accepted Answer

30–36 inches above the table

Answer

12–18 inches above the table

Answer

48–60 inches above the table

Answer

Flush with the ceiling with no clearance

Question 2

What is the general guideline for sizing a chandelier's diameter relative to a dining room's dimensions?

Accepted Answer

The diameter in inches should approximate the sum of the room's length and width in feet

Answer

The diameter in inches should equal the room's longest wall measurement in feet

Answer

The diameter should be exactly half the width of the dining table

Answer

The diameter should never exceed 24 inches regardless of room size

Question 3

Which type of light fixture is a wall-mounted decorative and functional source commonly used in hallways, bathrooms, and flanking mirrors?

Accepted Answer

Sconce

Answer

Recessed can

Answer

Torchière

Answer

Track head

Question 4

How does natural light influence a decorator's artificial lighting specification decisions?

Accepted Answer

The direction, intensity, and color of natural light determine how and when supplemental artificial sources are needed

Answer

Natural light is irrelevant since artificial lighting operates independently of windows

Answer

Natural light only affects which curtain color to select, not the fixture specifications

Answer

Decorators always use the same artificial lighting regardless of natural light availability

Question 5

What is circadian lighting and why is it becoming increasingly relevant in residential decorating?

Accepted Answer

Lighting that shifts color temperature and intensity throughout the day to support the body's natural sleep-wake cycle

Answer

A lighting control system that turns lights on and off based on occupancy sensors

Answer

A European building code standard for minimum lumen output in bedrooms

Answer

A type of LED bulb that changes color based on room temperature

Question 6

Under-cabinet lighting in a kitchen primarily serves which functional purpose?

Accepted Answer

Task lighting that eliminates shadows on the counter caused by overhead ambient fixtures

Answer

Accent lighting to highlight the cabinet door finish

Answer

Cove lighting to create a diffused glow in the kitchen

Answer

Emergency backup lighting in the event of a power outage

Question 7

When a decorator selects LED strip lighting for a project, what specification is most critical for ensuring consistent color appearance across multiple strips from different batches?

Accepted Answer

The MacAdam ellipse rating or SDCM (Standard Deviation of Color Matching) value

Answer

The wattage rating per linear foot of strip

Answer

The IP (Ingress Protection) rating of the strip housing

Answer

The adhesive backing strength measured in pounds per square inch