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WorksheetsLighting Principles Quiz
Total questions: 20
Worksheet time: 10mins
Inverse Square Law relates to:
Color rendering of a light source
Luminous intensity varying with the distance squared
Heat emission from a lamp
Reflection from a white surface
Lambert's Cosine Law is used to determine:
Glare level from a window
Reduction in illumination with increasing angle of incidence
Flicker rate of lamps
Electrical load of luminaires
Which term defines the amount of light falling on a surface?
Luminous flux
Luminous intensity
Illuminance
Luminance
Daylight Factor is expressed as a ratio of:
Indoor illuminance to outdoor illuminance
Luminous flux to luminous intensity
Lamp wattage to lumen output
Reflected light to incident light
The unit of luminous flux is:
Lux
Candela
Lumen
Watt
Which factor affects the quality of artificial lighting?
Uniformity, glare, and colour rendering
Lamp wattage only
Size of the room only
Type of electrical wiring
The Colour Rendering Index (CRI) indicates:
Efficiency of a lamp
Brightness of a lamp
How accurately colours appear under the light
Voltage drop across a lamp
Incandescent lamp works on the principle of:
Gas discharge
Thermal radiation from a filament
Chemical reaction
Magnetic induction
Fluorescent lamp produces light by:
Heating a filament
Discharge through mercury vapour
Friction of electrodes
Magnetic field emission
LED lamp is preferred because it:
Consumes more energy but lasts longer
Produces heat to generate light
Has high efficiency and long life
Requires no electricity
The choice of luminaire depends on:
Aesthetics, mounting height, and light distribution
Colour of walls only
Room temperature only
Type of electrical wiring only
Which indoor area requires the highest lighting level?
Storerooms
Corridors
Office task areas
Parking areas
For outdoor street lighting, luminaires should provide:
High glare and low uniformity
Low glare and high uniformity
Warm colour rendering only
Focused task lighting only
Supplementary electrical lighting is used when:
Natural daylight is adequate
Daylight is insufficient or unavailable
The building has windows
There are no electrical circuits
Which type of lighting is best suited for highlighting artwork?
Ambient lighting
Task lighting
Accent lighting
General lighting
What does the term 'luminance' refer to?
The color temperature of a light source
The total amount of light emitted
The intensity of light in a specific direction
The brightness of a surface as perceived by the eye
What is the primary purpose of a diffuser in lighting?
To increase energy consumption
To distribute light evenly
To reduce the lifespan of the lamp
To focus light in one direction
Which type of light source is known for its energy efficiency?
Fluorescent tubes
LEDs
Halogen lamps
Incandescent bulbs
What does the term 'glare' refer to in lighting?
Light flickering
Excessive brightness causing discomfort
Insufficient light for tasks
Color distortion under light
Which parameter increases the number of luminaires required for a space?
Higher UF
Higher MF
Higher lux level (E)
Lower area
