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ECE :: Analog Electronics

Analog Electronics - Section 1
Analog Electronics - Section 2
Analog Electronics - Section 3
Analog Electronics - Section 4
Analog Electronics - Section 5
Analog Electronics - Section 6
Analog Electronics - Section 7
Analog Electronics - Section 8
Analog Electronics - Section 9
Analog Electronics - section-1
Analog Electronics - Section 10
Analog Electronics - Section 11
Analog Electronics - Section 12
Analog Electronics - Section 13
Analog Electronics - Section 14
Analog Electronics - Section 15
Analog Electronics - Section 16
Analog Electronics - Section 17
Analog Electronics - Section 18
Analog Electronics - Section 19
Analog Electronics - Section 20
Analog Electronics - Section 21
Analog Electronics - section-22
Analog Electronics - Section-23

  1. A Darlington circuit is obtained by connecting

    2. A.
    two CB stages in cascade
    B.
    two CE stages in cascade
    C.
    a CE stages followed by CB stage
    D.
    two emitter follower in cascade

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  2. A CE amplifier has a high input signal. In the wave shape of emitter current

    3. A.
    positive and negative half cycles will be symmetrical
    B.
    positive half cycle will be elongated and negative half cycle will be compressed
    C.
    positive half cycle will be compressed and negative half cycle will be elongated
    D.
    the half cycles may be either elongated or compressed

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  3. An inverting voltage feedback is a

    4. A.
    voltage amplifier
    B.
    current amplifier
    C.
    current to voltage converter
    D.
    voltage to current converter

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  4. If a transistor is operating with both of its Junctions forward biased, but with the collector base forward biased, but with the collector base forward bias greater than the emitter-base forward bias, then it is operating in the

    5. A.
    forward active mode
    B.
    reverse saturation mode
    C.
    reverse active mode
    D.
    forward saturation mode

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  5. In a CE amplifier the Q point is very close to cutoff point on the load line. This results in

    6. A.
    saturation clipping
    B.
    cut off clipping
    C.
    both saturation and cut off clipping
    D.
    either saturation clipping or cut off clipping

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  6. If the value of C2 and C3 are doubled, the oscillation frequency will be

    7. A.
    quadrupled
    B.
    doubled
    C.
    unchanged
    D.
    halved

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  7. Which of the following statement about JFET is correct?

    8. A.
    In an N-channel JFET, the channel is the narrowest under zero gate bias condition
    B.
    In a JFET the gates are always forward biased
    C.
    In a JFET, gate-source cut off voltage is numerically equal to the pinch off voltage
    D.
    It is a voltage controlled device

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  8. Assertion (A): In Darlington pair, the overall β is product of individual βs

    Reason (R): The voltage gain of a base driven amplifier is equal to ac collector voltage divided by ac base voltage

    9. 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

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  9. A Wien bridge oscillator uses Wien bridge for

    10. A.
    tuning and phase shift
    B.
    tuning
    C.
    phase shift
    D.
    either tuning or phase shift

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  10. A cascade amplifier will have higher cut off frequency

    11. A.
    equal to that of single stage amplifier
    B.
    less than that of single stage amplifier
    C.
    more than that of single stage amplifier
    D.
    none of these

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