CLC Commercial & Retail Lighting 2

Question 1

In a retail apparel store, which color rendering index (CRI) minimum is recommended to accurately show fabric colors?

Accepted Answer

CRI 90

Answer

Apparel retail requires CRI 90 or higher so customers can evaluate true fabric colors under conditions similar to natural daylight.

Question 2

What is 'accent lighting' primarily used for in a retail environment?

Accepted Answer

Highlighting merchandise to draw customer attention

Answer

Accent lighting directs focused beams onto featured products to create visual hierarchy and stimulate purchase intent.

Question 3

A commercial office space has an average maintained illuminance of 300 lux. According to IESNA recommendations, is this adequate for general office work?

Accepted Answer

No, general office work requires at least 500 lux

Answer

IESNA recommends approximately 500 lux (50 fc) for general office tasks such as reading and computer work.

Question 4

What is the purpose of a 'layered lighting' strategy in a commercial retail space?

Accepted Answer

To combine ambient, accent, and task lighting for visual interest and function

Answer

Layered lighting integrates ambient, accent, and task layers to serve multiple purposes simultaneously, improving both aesthetics and merchandising effectiveness.

Question 5

Which lamp type is most susceptible to color shift when dimmed, potentially affecting merchandise appearance in retail stores?

Accepted Answer

Metal halide

Answer

Metal halide lamps experience significant color shift and flicker when dimmed, making them unsuitable for applications requiring consistent merchandise color rendering.

(CLC) Certified Lighting Consultant Practice Test

(CLC) Certified Lighting Consultant Practice Test

CLC Commercial & Retail Lighting 2