Light (Leaving Cert Construction Studies): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are moveable fixtures like table lamps classified as?
What are moveable fixtures like table lamps classified as?
Non-architectural fittings
Which lighting principle is generally more energy-efficient?
Which lighting principle is generally more energy-efficient?
Luminescence
What percentage of energy becomes heat in GLS lamps?
What percentage of energy becomes heat in GLS lamps?
Which gases do halogen lamps contain?
Which gases do halogen lamps contain?
Iodine or bromine
What coating inside fluorescent tubes absorbs light and then glows?
What coating inside fluorescent tubes absorbs light and then glows?
Phosphor
What is the main shape difference between CFLs and standard fluorescent tubes?
What is the main shape difference between CFLs and standard fluorescent tubes?
CFLs are curved
What is the life expectancy of LED lamps?
What is the life expectancy of LED lamps?
Up to hours
A -watt fluorescent lamp equals a -watt tungsten lamp. How much more efficient is it?
A -watt fluorescent lamp equals a -watt tungsten lamp. How much more efficient is it?
times
How is energy efficiency of lamps measured?
How is energy efficiency of lamps measured?
Lumens per watt
What is a luminaire?
What is a luminaire?
Complete lighting unit housing the lamp