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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. In a good voltage amplifier, its input impedance

    2. A.
    must be high compared to the resistance of the source
    B.
    must be low compared to the resistance of the source
    C.
    must be equal to the resistance of the source
    D.
    must be half the resistance of the source

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  2. A non-inverting voltage feedback amplifier is a

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

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  3. A Colpitt's oscillator uses

    4. A.
    a tapped inductor
    B.
    an inductor and two capacitors
    C.
    both (a) and (b)
    D.
    either (a) or (b)

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  4. In every practical oscillator, the loop gain is slightly larger than unity and the amplitude of the oscillations is limited by the

    5. A.
    magnitude of the loop gain
    B.
    onset if non-linearity
    C.
    magnitude of gain of the amplifier
    D.
    feedback transmission factor

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  5. IF amplifiers for radio receivers are often tuned to

    6. A.
    456 Hz
    B.
    456 kHz
    C.
    3456 MHz
    D.
    456 GHz

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  6. In CE circuit the parameter f12 is very small.

    7. A.
    True
    B.
    False

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  7. In which amplifier circuit is gate conductance negligible?

    8. A.
    JFET amplifier
    B.
    MOSFET amplifier
    C.
    Both JFET and MOSFET amplifier
    D.
    None of the above

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  8. In figure VCEQ for each transistor is

    9. A.
    VCC
    B.
    0.5 VCC
    C.
    0.75 VCC
    D.
    0.25 VCC

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  9. Which of the following combinations has no phase inversion of the signal?

    10. A.
    Two CE stages
    B.
    CE and CC stages
    C.
    Three CE stages
    D.
    CE stages and emitter follower

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  10. Which of the following h parameters is an admittance?

    11. A.
    hie
    B.
    hre
    C.
    hfe
    D.
    hoe

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