Quiz  /  Semiconductor Device Gate & PSU MCQ Questions With Answers

  • 1. 
    An n type semiconductor is negatively charged

  • True
  • False

  • 2. 
    Insulator have __________ Forbidden energy gap

  • No
  • Large
  • Small
  • Medium

  • 3. 
    The energy band in which free electrons exist is know as

  • first band
  • second band
  • conductive band
  • valence band

  • 4. 
    Electrons are Held in Orbit Due to _______ Force

  • Magnetic
  • Electric
  • Gravitational
  • Electrostatic

  • 5. 
    Choose the correct answer.

  • A
  • B
  • C
  • D

  • 6. 
    Choose controllable power switches in these following list:

  • BJTs
  • Thyristors
  • MOSFETs
  • All of above

  • 7. 
    When the diode is operated in forward bias mode

  • it offers high resistance
  • it becomes non conductive
  • it is open switch
  • it offers very low resistance

  • 8. 
    Conductivity of semiconductor __________________ with increase in temperature.

  • increases
  • decreases
  • remains unchanged

  • 9. 
    Selection of suitable power switches in any application depends on _____ and ______.

  • operating frequency
  • power capacity
  • power losses
  • Both A & B

  • 10. 
    LED is

  • Light Enhancing Diode
  • Light Emitting Diode
  • Light Emitting Detector
  • Light Enhancing Detector

  • 11. 
    This power switch exhibits _______ current gain with _________ gate current.

  • high, low
  • low, high
  • high, high
  • low, low

  • 12. 
    What is the name of this component?

  • PN junction
  • LED
  • silicon
  • PNP

  • 13. 
    A diode is used as rectifier to convert

  • dc to ac
  • ac to dc
  • low current into high current
  • high current into low current

  • 14. 
    Conductor have __________ Forbidden energy gap

  • No
  • Large
  • Small
  • Medium

  • 15. 
    _______________ is Neutrally Charged

  • Electrons
  • Protons
  • Neutrons
  • Nucleus

  • 16. 
    Electrons and holes are equal in magnitude but opposite in polarity

  • True
  • False

  • 17. 
    Zener diode are used as voltage regulator

  • true
  • false

  • 18. 
    Which is not one of the properties of semiconductor?

  • 4 electrons in outermost orbit, in covalent bonding.
  • atoms vibrate causes electron to break free from the bonds.
  • Electron free leaves hole.
  • Semiconductor has 2 types of charge carriers.
  • all of the above are the properties of it

  • 19. 
    Semiconductor are substances whose electrical conductivity lies between that of

  • conductor and insulator
  • conductor and metal
  • plastic and wood
  • insulator and gold

  • 20. 
    Name this electronic component

  • Capacitor
  • Fixed Resistor
  • Potentiometer
  • Transistor

  • 21. 
    Who contribute to the current in a semiconductor

  • electrons only
  • holes only
  • negative ions
  • both electrons and holes
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