Lighting Color Temperature and Efficiency Quiz

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What color does the lamp give when dimmed?

Green

Purple

Blue

Yellow-red (correct)

How does lamp efficiency vary with wattage for incandescent lamps?

Increases with wattage (correct)

Is not related to wattage

Decreases with wattage

Stays constant with wattage

What is a characteristic of Tungsten-Halogen reflector lamps?

They have a soft glass envelope

They provide accurate light beam control (correct)

They are available in absorption coatings

They are mainly used for exterior applications

Why are interference (Dichroic) filters now available in lamps?

To remove heat from the light beam Signup and view all the answers

Which type of lamp is generally made for indoor use?

R lamps with reflective coatings Signup and view all the answers

What is the primary principle behind interference filters used in lamps?

Interference Signup and view all the answers

What is the main cause of the blackening of incandescent bulbs and eventual filament rupture?

Current passing through the high-resistance filament Signup and view all the answers

How does a small change in operating voltage affect the efficiency of an incandescent lamp?

It can markedly alter the life, output, and efficiency of the lamp Signup and view all the answers

What is one of the effects of burning a 120V lamp at 125V?

16% more light (lumens) Signup and view all the answers

How does bulb temperature affect lumen maintenance in incandescent lamps?

It slows down the decrease in light output Signup and view all the answers

What does the term 'efficacy' refer to in the context of incandescent lamps?

Lumens per watt Signup and view all the answers

Why are incandescent lamps available in many bulb and base types?

For specific applications and preferences Signup and view all the answers

What is the recommended wattage for bulbs with luminous parts to avoid glare?

75 Watts Signup and view all the answers

Where is the best place to use floor cans for dramatic uplight according to the text?

Under plants or tucked in corners Signup and view all the answers

What type of lighting is best suited for small sculptures and flowering arrangements?

Portable spots Signup and view all the answers

Which type of lighting is recommended to highlight treasured paintings, prints, or photos?

Picture lights Signup and view all the answers

What effect do open reflector downlights create on the wall according to the text?

Scallop pattern Signup and view all the answers

What is the purpose of incandescent wall lighting according to the text?

To illuminate a wall behind a seating group Signup and view all the answers

What type of light is designed to move right to left or left to right with a special timer?

Moving Lights Signup and view all the answers

Which type of light produces a throbbing bright light effect, making dancers appear to dance faster than normal speed?

Strobe Light Signup and view all the answers

What is the function of a Black Light in the context of lighting effects?

Changes true colors and makes teeth luminous Signup and view all the answers

Which type of light is mounted on each wing of a rotating fan, emitting lights of different colors?

Ceiling Fan Light Signup and view all the answers

What produces an effect where the bulb is reflected to a mirror which then reflects it to a one-way mirror?

Police Siren Signup and view all the answers

What type of light is mounted on a wall and mirrored ceiling, filled with neon gas?

Neon Light Signup and view all the answers

What type of lighting is suitable for living and dining areas, bedrooms, family rooms, and dens?

Fluorescent wall lighting Signup and view all the answers

Which type of lighting is characterized by providing both upward and downward light on walls and ceilings?

Valance brackets Signup and view all the answers

What type of lighting is ideal for creating a sense of intimacy when used to light draperies, walls, or murals?

Recessed fluorescent lighting Signup and view all the answers

Which lighting type is best for task and general lighting in areas with low ceilings?

Recessed incandescent lighting Signup and view all the answers

What type of lighting can be mounted low on the wall to provide task lighting or installed over sliding doors to give general room illumination?