CLC Lighting Design & Application 3

Question 1

Which IES recommended practice provides guidance for office lighting design in the United States?

Accepted Answer

ANSI/IES RP-1

Answer

ANSI/IES RP-1 (Recommended Practice for Office Lighting) provides guidelines for illuminance levels, luminance ratios, and visual comfort in office environments.

Question 2

A designer is evaluating two luminaires: one with an LER of 85 lm/W and one with 60 lm/W. What does LER stand for and which is more efficient?

Accepted Answer

Luminaire Efficacy Rating; the 85 lm/W unit is more efficient

Answer

LER (Luminaire Efficacy Rating) measures system lumens per watt for the complete luminaire; higher values indicate greater efficiency.

Question 3

In exterior lighting design, what is the main goal of 'full cutoff' classification?

Accepted Answer

To prevent any light from being emitted at or above 90° from nadir

Answer

Full cutoff luminaires emit zero candelas at 90° and above from nadir, minimizing light trespass, glare, and sky glow.

Question 4

A restaurant designer wants warm, intimate lighting. Which CCT range is most appropriate?

Accepted Answer

2700–3000K

Answer

2700–3000K produces warm white light that creates an intimate, flattering ambiance ideal for dining environments.

Question 5

What lighting design strategy uses a combination of ambient, task, and accent layers to provide flexibility and visual interest?

Accepted Answer

Layered lighting design

Answer

Layered lighting design uses multiple lighting types—ambient, task, accent, and decorative—to create flexible, visually rich environments.

(CLC) Certified Lighting Consultant Practice Test

(CLC) Certified Lighting Consultant Practice Test

CLC Lighting Design & Application 3