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WorksheetsLED
Total questions: 10
Worksheet time: 5mins
What does LED stand for
Light EnDangering
Dad Eating Lamps
Light Emitting Diode
None of the above
Which type of bulb is the most recent development?
LED
Incandescent
Fluorescent (CFL)
Which type of bulb produces the least heat?
LED
Incandescent
Fluorescent or CFL
Which type of bulb is the oldest style of bulb?
LED
Incandescent
Fluorescent or CFL
The filament of electric bulb is made of.....
Iron
Lead
Tungsten
Which lamp save electricity?
The colour of emitted light from LED depends on
physical dimensions of LED
Number of available carriers
Type of semiconductor material used
Number of recombinations taking place
The advantage of LED is
Low operating voltage
Long Life
Small in Size
All the above
Led bulb is
Cost efficient
Energy efficient
Not harmful to environment
All these
Advantage of led television is
Brighter picture quality
Thin in size
Life span is more
All the above
