CLD Sustainable & Energy-Efficient Lighting Solutions

Question 1

Lighting Power Density (LPD) expresses:

Accepted Answer

Watts per square foot

Answer

Lumens per watt

Answer

Kelvin per watt

Answer

CRI value

Question 2

Daylight harvesting relies on:

Accepted Answer

Photosensors

Answer

Occupancy sensors

Answer

Ultrasonic sensors

Answer

CO₂ sensors

Question 3

Which rating system awards credits for efficient lighting?

Accepted Answer

LEED

Answer

UL

Answer

FCC

Answer

ISO 14001

Question 4

L70 of 50 000 h means LED output will:

Accepted Answer

Be 70 % of initial

Answer

Increase 30 %

Answer

Fail completely

Answer

Double output

Question 5

Circadian‑centric tunable white systems:

Accepted Answer

Shift CCT through day

Answer

Keep constant 2700 K

Answer

Emit only red light

Answer

Increase flicker

Question 6

Sensors that turn lights off when area is empty are:

Accepted Answer

Occupancy sensors

Answer

Daylight sensors

Answer

Voltage sensors

Answer

Lux meters

Question 7

Efficacy of light source is measured in:

Accepted Answer

Lumens per watt

Answer

Candela

Answer

Watts per lamp

Answer

Kelvin

Question 8

Life‑cycle assessment (LCA) considers:

Accepted Answer

Full product life cycle

Answer

First cost only

Answer

Operational energy only

Answer

Packaging graphics

Question 9

To mitigate sky glow, exterior fixtures should be:

Accepted Answer

Full‑cutoff

Answer

High CCT

Answer

Tall poles

Answer

Uplights