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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. For the high-pass circuit to act as a differentiator, the time constant must be

    2. A.
    small
    B.
    very small in comparison to the time period of the input signal
    C.
    very high in comparison to the time period of the input signal (that is low pass circuit)
    D.
    moderate value

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  2. When a CE transistor is cut off

    3. A.
    voltage across collector reduces to zero
    B.
    voltage across collector is maximum
    C.
    maximum collector current flows
    D.
    maximum voltage appears across the load resistance

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  3. With JFETs cascade means

    4. A.
    a common source driving a common gate connection
    B.
    a common gate driving a common source connection
    C.
    two FETs connected in parallel
    D.
    none of the above

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  4. The bandwidth of an amplifier can be reduced by

    5. A.
    miller effect compensation
    B.
    pole zero compensation
    C.
    dominant pole compensation
    D.
    lead compensation

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  5. To draw dc equivalent circuit for a CE amplifier circuit we should

    6. A.
    Reduce all ac sources to zero
    B.
    Open all capacitors
    C.
    Reduce all ac sources to zero and open all capacitors
    D.
    Reduce all ac sources to zero and short all capacitors

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  6. The maximum efficiency of class A amplifier is

    7. A.
    100%
    B.
    81.8%
    C.
    50%
    D.
    40%

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  7. In a cascade amplifier, the intermediate stages are always in

    8. A.
    CC configuration
    B.
    CB configuration
    C.
    CE configuration
    D.
    any of the above

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  8. For an amplifier the power gain in decibels will be equal to voltage gain in decibels only when

    9. A.
    R0 = 0
    B.
    R0 = Ri = 90
    C.
    R0 = Ri
    D.
    Ri = 0

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  9. In a differential amplifier, CMRR can be improved by using an increased

    10. A.
    emitter resistance
    B.
    collector resistance
    C.
    power supply voltages
    D.
    source resistance

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