Quiz  /  Junction Transistor Gate & PSU MCQ Questions With Answers

  • 1. 
    Number of diodes used in centre tap rectifier is

  • 1
  • 2
  • 3
  • 4

  • 2. 
    The power gain is highest in Common emitter.

  • True
  • false

  • 3. 
    The name transistor is derived from ___ that means the resistance is changed.

  • ten resistor”
  • “transfer run”
  • “transfer resistor”
  • None of the above

  • 4. 
    An electronic circuit having the capability to amplify power, voltage or current

  • transformer
  • attenuator
  • amplifier
  • transistor

  • 5. 
    Depletion region contains

  • Free holes
  • Free electrons
  • Immobile charge carriers
  • All of the above

  • 6. 
    N Zener diode, the Zener breakdown takes place

  • Below 6 V
  • At 6 V
  • Above 6 V
  • None of the above

  • 7. 
    What is emitter current Ie of transistor that its Ic=100mA and Ib=100uA?

  • 100.1 mA
  • 1000mA
  • 100 mA

  • 8. 
    When transistors are used in digital circuits they usually operate in the:

  • active region
  • breakdown region
  • saturation and cutoff regions
  • linear region

  • 9. 
    A device that convert ac into dc is known as ....

  • rectifier
  • amplifier
  • oscillator
  • voltage regulator

  • 10. 
    The generalized formula for the input impedance of any circuit is

  • ZIN = VIN/IIN
  • V=IR
  • IN=R
  • All of the above

  • 11. 
    The number of depletion layers in a transistor is

  • 1
  • 3
  • 2
  • 4

  • 12. 
    What is the expression for the Current Gain, β?

  • ΔIc / ΔVc
  • ΔIc / ΔIB
  • ΔVCE / ΔVBE
  • ΔIc / ΔVB

  • 13. 
    What is the Zener current for the given regulator circuit

  • 10 mA
  • 20 mA
  • 15mA
  • 5 mA

  • 14. 
    Total emitter current is:

  • IE – IC
  • IC + IE
  • IB + IC
  • IB – IC

  • 15. 
    Depletion region behaves as

  • Semiconductor
  • insulator
  • conductor
  • High resistance

  • 16. 
    The emitter-base junction of a transistor is ___ Biased while the collector-base junction is

  • Reverse, Forward
  • Reverse, Reverse
  • Forward, forward
  • Forward, reverse

  • 17. 
    Zener diodes uually operated in

  • forward bias
  • reverse bias
  • above knee voltage
  • none of these

  • 18. 
    Which is true

  • IE=  α\alphaα  IB+Ico
  • IC=  α\alphaα  IB+Ico
  • IB=  α\alphaα  IE+Ico
  • IC=  α\alphaα  IE+Ico

  • 19. 
    In a transistor, collector current is controlled by:

  • collector voltage
  • base current
  • collector resistance
  • all of the above

  • 20. 
    The output resistance of a transistor connected in -----arrangement is the highest.

  • common emitter
  • Common base
  • Both A & B
  • None of these

  • 21. 
    Which ONE has the poorest bias stablisation without prevention of thermal runaway?

  • Fixed Bias
  • Emitter Feedback Bias
  • Collector Feedback Bias
  • Voltage Divider Bias
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