Quiz 10 - Lighting Concepts and Incandescent Lighting
Illuminate Your Knowledge: Lighting Concepts Quiz
Welcome to the Lighting Concepts and Incandescent Lighting Quiz! Test your knowledge on essential lighting principles, luminous efficacy, and the specific requirements for various lighting installations. Whether you’re a student, professional, or simply interested in enhancing your understanding of lighting, this quiz is designed for you.
- 20 multiple choice questions
- Evaluate your understanding of key lighting concepts
- Learn about incandescent lighting and its applications
Lux can be defined as:
1 lumen/m2
1 candela/m2
1 lumen/W
1 watt/lm
The centre terminal of a GES lamp holder must be connected to:
Earth
Neutral
Frame
Active
Which of the following would NOT be a restricted location for a smoke alarm in a residential home?
Within 200mm of the cornice
In the apex of the roof
Mounted vertically above a doorway
Mounted in a hallway between bedrooms
A total luminous flux of 3000lm falls uniformly on an area of 5m by 3m. Determine the level of illuminance on the area.
100 lux
200 lux
5 lux
50 lux
Find the luminous intensity of an emergency light if an illuminance of 0.5lx exists at a distance of 3m.
4.5 candela
1.5 candela
18 candela
4.2 candela
The unit of luminous efficacy is:
Lumens
Lumens/watt
Candelas/watt
Lux
At what height should a luminaire, with an intensity of 3000cd, be mounted to illuminate a surface which requires an illumination of 350 lux?
8.5 metrew
4.2 metres
3.3 metres
2.9 metres
If the operating voltage is increased to an incandescent lamp, what would the effect be on the efficacy and the lamp life?
Both will decrease
Both will increase
The efficacy will increase and the lamp life decrease
The efficacy will decrease and the lamp life increase
In the lighting terms, the level at which a task is performed is termed the:
Visual task
Task area
Working plane
Reflectance
The quantity of light arriving at a surface is termed:
Illumination
Luminance
Luminous intensity
Luminous flux
Glare from a light source is termed:
Shielding angle
Indirect glare
Direct glare
Reflectance
Glare reflected from a surface is termed:
Shielding angle
Indirect glare
Direct glare
Reflectance
The object being illuminated for a particular purpose is termed:
Visual task
Task area
Working plane
Reflectance
Efficiency of a light source is termed:
Luminous efficacy
Luminousity
Illuminace
Maximum light output
The change of direction due to change of density of material it passes through is termed:
Shielding angle
Reflection
Diffusion
Refraction
The angle below the horizontal axis at which the lamp is first visible is termed:
Cut-off angle
Working plane
Shielding angle
Glare angle
For correct operation, halogen lamp tubes should be installed:
Within 4 degrees of the horizontal
Within 10 degrees of the horizontal
To align with the working plane
In a protective enclosure
What is the wiring rules required clearance above a recessed halogen lamp?
50 mm
100 mm
150 mm
200 mm
What happens to the resistance of an incandescent lamp filament as the temperature increases?
Increases
Decreases
Remains unchanged
Is inversely proportional to the size of the lamp
When light bounces off a surface this is called?
Refraction
Reflection
Polaristaion
Diffusion
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