Analog Electronics MCQ

Below Analog Electronics quiz are Multiple Choice Questions (MCQs) type Quiz. These Analog Electronics MCQ Questions helps you to refresh your Analog Electronics, you can see the correct option by clicking on it. .
  • 1. The efficiency of a full wave rectifier using centre tapped transformer is twice that in full wave bridge rectifier.

    • True
    • False
  • 2. The diode current equation is not applicable in ____________

    • Forward biased state
    • Reverse biased state
    • Unbiased state
    • It is applicable in all bias states
  • 3. In a common emitter, unbypassed resister provides

    • voltage shunt feedback
    • current series feedback
    • negative voltage feedback
    • positive current feedback
  • 4. In a half wave rectifier, the input sine wave is 250sin100 ᴨt Volts. The output ripple frequency of rectifier will be __________

    • 100 Hz
    • 200 Hz
    • 50 Hz
    • 25 Hz
  • 5. A 10 V power supply would use which filter capacitor?

    • paper capacitor
    • electrolytic capacitor
    • mica capacitor
    • air capacitor
  • 6. The cascade amplifier is a multistage configuration of

    • CC-CB
    • CE-CB
    • CB-CC
    • CE-CC
  • 7. What will happen if doping of an intrinsic semiconductor with pentavalent impurity atom ?

    • Fermi level not change
    • Fermi level fall
    • Fermi level raises
    • All of the above
  • 8. An RC oscillator uses

    • one RC combination
    • two RC combinations
    • at least three RC combinations
    • either (a) or (b)
  • 9. Which power amplifier can deliver maximum load power?

    • Class A
    • Class AB
    • Class B
    • Class C
  • 10. In a CE amplifier the input impedance is equal to the ratio of

    • ac base voltage to ac base current
    • ac base voltage to ac emitter current
    • ac emitter voltage to ac collector current
    • ac collector voltage to ac collector current
  • 11. Which of the following oscillators is suitable for frequencies in the range of mega hertz?

    • RC phase shift
    • Wien bridge
    • Hartley
    • Both (a) and (c)
  • 12. Thermal runaway is not possible in FET because as the temperature of FET increases

    • The mobility decreases
    • The transconductance increases
    • The drain current increases
    • None of the above
  • 13. In a transistor leakage current mainly depends on

    • Doping of base
    • Size of emitter
    • Rating of transistor
    • Temperature
  • 14. The early effect in a bipolar junction transistor is caused by

    • Fast turn-on
    • Fast turn-off
    • Large collector-base reverse bias
    • Large emitter-base forward bias
  • 15. A change in the value of the emitter resistance Re in a differential amplifier

    • Affects the difference mode gain Ad
    • Affects the common mode gain Ac
    • Affects both Ad and Ac
    • Does not effect either Ad and Ac
  • 16. The current gain of a BJT is

    • gm r0
    • gm / r0
    • gm rπ
    • gm /rπ
  • 17. In a CB amplifier the maximum efficiency could be

    • 99%
    • 85%
    • 50%
    • 25%