WorksheetsLight Emitting Diode
Total questions: 10
Worksheet time: 10mins
Zener diode works as _______________ .
doubler
voltage regulator
amplifier
oscillator
In __________________ region zener act as voltage regulator.
forward bias
neutral
reverse break down region
full form of LED
light emitting diode
light limiting diode
light storing diode
light electrification diode
led works only in ______ bias
Forward
Reverse
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
When forward biased, LED emits light because of
Recombination of carriers
Light generated in breaking the covalent bonds
Light produced by collisions
None of the above
The LEDs made with GaAs emit light in the
Yellow region
Infrared region
Orange region
Red visible region
The LEDs made with SiC emit light in the
Yellow
Orange
Amber
Blue
The LEDs made with GaAsP emit light in the
Red
Yellow
Green
White
