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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. Which of the following circuits can operate class AB for audio power output?

    2. A.
    Emitter follower
    B.
    Push pull
    C.
    Cascade
    D.
    Darlington pair

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  2. In a P-N-P transistor, with normal bias

    3. A.
    the collector junction has negligible resistance
    B.
    only holes cross the collector junction
    C.
    the collector-base junction is reverse biased and the emitter base junction is forward biased
    D.
    only majority carriers cross the collector junction

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  3. If Rs is the sources resistance, the O/P resistance of an emitter follower using the simplified hybrid model would be

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  4. A D.C. amplifier amplify

    5. A.
    D.C. only
    B.
    A.C. only
    C.
    both A.C. and D.C.
    D.
    none of the above.

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  5. In common base amplifier the current gain is less than one, but the voltage gain may be anywhere from

    6. A.
    0.5 to 1
    B.
    1 to 5
    C.
    5 to 10
    D.
    50 to 2000

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  6. Figure represents

    7. A.
    Integrator
    B.
    Differentiator
    C.
    High Pass Filter
    D.
    Band Pass Filter

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  7. In a class C operation

    8. A.
    VCC is much larger than VCE(sat)
    B.
    VCC is much smaller than VCE(sat)
    C.
    VCC and VCE(sat) are nearly equal
    D.
    none of the above

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  8. The frequency response of an ideal tuned amplifier should be as represented in figure by

    9. A.
    A
    B.
    B
    C.
    C
    D.
    D

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  9. For a good voltage amplifier, its input impedance should be

    10. A.
    low as compared to the resistance of the source
    B.
    high as compared to the resistance of the source
    C.
    always inductive
    D.
    always capacitive

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  10. Gain stability in an oscillator can bs achieved by

    11. A.
    providing negative feedback
    B.
    providing positive feedback
    C.
    using low Q circuits
    D.
    controlling the gain

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