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Diode

Quiz by Virgil P. Samonte

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20 questions
Show answers
  • Q1
    What is a diode?
    An electronic component that allows current to flow in only one direction.
    A type of battery.
    A sensor that detects light.
    A device that regulates voltage.
    30s
  • Q2
    What is the purpose of a diode?
    To convert AC current to DC current.
    To measure resistance.
    To store energy.
    To amplify signals.
    30s
  • Q3
    What is the voltage drop across a silicon diode in forward bias?
    1.5 volts.
    3 volts.
    5 volts.
    0.7 volts.
    30s
  • Q4
    What happens to a diode in reverse bias?
    It emits light.
    It blocks current flow.
    It generates a magnetic field.
    It allows current to flow.
    30s
  • Q5
    What is a Zener diode?
    A diode that amplifies signals.
    A diode that operates in reverse breakdown.
    A diode that measures resistance.
    A diode that stores energy.
    30s
  • Q6
    What is the full name of LED?
    Light Emitting Diode
    Luminous Emotion Display
    Laser Emitting Device
    Light Emitting Device
    30s
  • Q7
    What is the basic principle of LED?
    Thermoluminescence
    Radioluminescence
    Electroluminescence
    Photoluminescence
    30s
  • Q8
    Which material is used as a semiconductor in LED?
    Gallium Arsenide
    Silicon
    Copper
    Germanium
    30s
  • Q9
    What is the color of LED when Gallium Phosphide is used as a semiconductor?
    Blue
    Green
    Red
    Yellow
    30s
  • Q10
    What is the color of LED when Indium Gallium Nitride is used as a semiconductor?
    Red
    Blue
    Yellow
    Green
    30s
  • Q11
    What is the efficiency of LED compared to traditional incandescent light bulbs?
    Lower
    Higher
    Same
    Depends on the color
    30s
  • Q12
    Which type of LED is used in traffic lights?
    Infrared LED
    Ultra Violet LED
    High Power LED
    Low Power LED
    30s
  • Q13
    What is the lifespan of LED?
    Between 20,000 and 30,000 hours
    More than 50,000 hours
    Between 30,000 and 40,000 hours
    Less than 10,000 hours
    30s
  • Q14
    What is the advantage of using LED in electronic devices?
    Better sound quality
    Lower power consumption
    Higher power consumption
    Faster processing speed
    30s
  • Q15
    What type of energy is emitted by an LED?
    Heat energy
    Light energy
    Kinetic energy
    Sound energy
    30s

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