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Analog Electronics MCQ Questions and Answers

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Analog Electronics MCQ Questions and Answers: here learn anolog electronics multiple choice questions and answers related to electrical engineering. here you can learn mcqs questions for electrical engineering.

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21) 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

Answer : B Discuss

22) The bandwidth of an RF tuned amplifier is dependent on

    Q –factor of the tuned o/p circuit
    Q –factor of the tuned i/p circuit
    Quiescent operating point
    Q-factor of the o/p and i/p circuits as well as quiescent operating point

Answer : A Discuss

23) Introducing a resistor in the emitter of a common amplifier stabilizes the dc operating point against variations in

    Only the temperature
    only the β of the transistor
    Both Temperature & β
    None of the above

Answer : C Discuss

24) The MOSFET switch in its onstate may be considered equivalent to

    Resistor
    Inductor
    Capacitor
    Battery

Answer : C Discuss

25) Most of the linear ICs are based on the two-transistor differential amplifier because of its

    Input voltage dependent linear transfer characteristic
    High voltage gain
    High input resistance
    High CMRR

Answer : D Discuss

26) The horizontal intercept of dc load line is the same as ideal

    Cut off point
    Saturation point
    Operating point
    Quasi saturation point

Answer : A Discuss

27) A 741-type OP-amp has a gain-bandwidth product of 1MHz.A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of

    50 KHz
    100 KHz
    1000/17 KHz
    1000/7.07 KHz

Answer : B Discuss

28) A differential amplifier is invariably used in the i/p stage of all OP-amps.This is dome basically to provide the OP-amps with a very high

    CMRR
    Bandwidth
    Slew rate
    Open-loop gain

Answer : A Discuss

29) 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

Answer : C Discuss

30) In a transistor leakage current mainly depends on

    Doping of base
    Size of emitter
    Rating of transistor
    Temperature

Answer : D Discuss

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