Home / ECE / Analog Electronics :: Section 16

ECE :: Analog Electronics

  1. In a half wave voltage doubler circuit the input frequency is 50 Hz. The ripple frequency is

  2. A.
    25 Hz
    B.
    50 Hz
    C.
    100 Hz
    D.
    150 Hz

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Class A amplifiers are preferred when

  4. A.
    minimum distortion is required
    B.
    maximum voltage gain is required
    C.
    output signal is desired in phase with input signal
    D.
    signal having A.C. superimposed on D.C. are to be amplified

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. In figure the source resistance of current source IEE is infinite, then common mode gain is

  6. A.
    infinite
    B.
    zero
    C.
    indeterminate
    D.

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. Which of the following circuit would be preferred for a 355 KHz IF amplifier?

  8. A.
    Resistance loaded
    B.
    Double tuned transformer
    C.
    Video amplifier
    D.
    Class C

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. In a series regulated power supply circuit, the voltage gain Av, of the 'pass' transistor satisfies the condition

  10. A.
    Av → ∞
    B.
    1 << Av < ∞
    C.
    Av ≈ 1
    D.
    Av << 1

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Assertion (A): In CC amplifier the collector is at ac ground

    Reason (R): CC amplifier is also called emitter follower

  12. A.
    Both A and R are correct and R is correct explanation for A
    B.
    Both A and R are correct but R is not correct explanation for A
    C.
    A is correct R is wrong
    D.
    A is wrong R is correct

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. The circuit consisting of two transistor connected in series with the d.c. supply voltage is called

  14. A.
    push pull
    B.
    differential pair
    C.
    stacked V+
    D.
    complementary symmetry

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Common emitter transistor has

  16. A.
    high current and high voltage gain
    B.
    low current gain and low voltage gain
    C.
    high current gain and low voltage gain
    D.
    low current and voltage gain

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. A three terminal monolithic IC regulator can be used as

  18. A.
    an a adjustable output voltage regulator alone
    B.
    an adjustable output voltage regulator & a current regulator
    C.
    a current regulator & a power switch
    D.
    a current regulator alone

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Which of the following is not the main characteristic of a FET?

  20. A.
    Drain resistance
    B.
    Forward transconductance
    C.
    Temperature stability
    D.
    Amplification factor

    View Answer

    Workspace

    Discuss Discuss in Forum