Interior Design Lighting Design & Illumination 3

Question 1

What is 'daylighting' as a design strategy in interior design?

Accepted Answer

The strategic use of natural light from windows and skylights to illuminate building interiors

Answer

The exclusive use of skylights in residential spaces

Answer

A type of LED fixture engineered to mimic natural sunlight

Answer

Calculating daylight hours for building energy models

Question 2

What does the Light Reflectance Value (LRV) of a paint color or surface material measure?

Accepted Answer

The percentage of visible light reflected by a surface or color

Answer

The efficiency of a lamp in converting electricity to light output

Answer

The candlepower intensity of a lamp at a specified angle

Answer

The lumen depreciation rate of an LED over its rated lifetime

Question 3

Which dimmer technology is specifically designed to be compatible with LED and CFL bulbs?

Accepted Answer

Electronic low-voltage (ELV) or 0-10V LED-compatible dimmer

Answer

Magnetic low-voltage (MLV) dimmer

Answer

Standard TRIAC/leading-edge dimmer

Answer

Autotransformer dimmer

Question 4

What is the primary goal of circadian (human-centric) lighting systems?

Accepted Answer

To support the body's natural 24-hour biological clock by adjusting color temperature and intensity throughout the day

Answer

To reduce energy consumption by 50% or more compared to standard systems

Answer

To eliminate all artificial lighting in favor of daylight only

Answer

To provide constant, uniform illumination levels for all-day productivity

Question 5

What does a fixture schedule in a lighting legend on construction drawings typically include?

Accepted Answer

The fixture type code, manufacturer, catalog number, lamp type, wattage, and mounting method

Answer

The installed cost and lead time for each fixture type

Answer

Only the quantity and ceiling location of each fixture

Answer

The circuit breaker and panel board assignment for each fixture

Question 6

What distinguishes a recessed downlight (can light) from other ceiling fixture types?

Accepted Answer

The fixture housing is concealed above the ceiling plane with only the trim visible below

Answer

It is suspended from the ceiling by a rod or cord

Answer

It mounts flush against the ceiling surface without any recess

Answer

It projects light both upward and downward simultaneously

Question 7

According to Illuminating Engineering Society (IES) guidelines, what is the recommended illuminance range for general office work areas?

Accepted Answer

30–50 foot-candles

Answer

5–10 foot-candles

Answer

15–20 foot-candles

Answer

75–100 foot-candles