Interior Design Lighting Design & Illumination 2

Question 1

What is glare in lighting design?

Accepted Answer

Excessive brightness that causes visual discomfort or reduces visibility

Answer

The warm glow produced by incandescent lamps

Answer

The reflection of light off polished surfaces

Answer

The halo effect produced around LED fixtures

Question 2

Which lighting control system allows users to program and recall multiple preset lighting configurations with a single button press?

Accepted Answer

Scene controller / preset dimming system

Answer

Occupancy sensor

Answer

Standard dimmer switch

Answer

Daylight harvesting sensor

Question 3

What type of luminaire distributes light both upward toward the ceiling and downward into the room?

Accepted Answer

Direct/indirect fixture

Answer

Recessed downlight

Answer

Torchiere floor lamp

Answer

Track light

Question 4

What does the spacing criterion (SC) help determine in a lighting layout?

Accepted Answer

The maximum spacing between luminaires relative to their mounting height

Answer

The required distance between a fixture and the ceiling plane

Answer

The number of fixtures allowed on a single circuit

Answer

The beam angle of a spotlight fixture

Question 5

Which ASHRAE standard specifically sets lighting power density (LPD) limits for energy efficiency in commercial buildings?

Accepted Answer

ASHRAE 90.1

Answer

ASHRAE 55

Answer

ASHRAE 62.1

Answer

ASHRAE 189.1

Question 6

What information does a photometric report (IES file) provide for a luminaire?

Accepted Answer

Light distribution, intensity levels, and efficiency data for a specific fixture

Answer

Paint color and finish specifications for fixture housings

Answer

Daylight penetration measurements through windows

Answer

Color rendering index readings from installed lamps

Question 7

What is the generally accepted minimum CRI value for most commercial interior spaces to ensure adequate color rendering?

Accepted Answer

80

Answer

60

Answer

70

Answer

95