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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. When Z1 << Z, The circuit of figure works as

    2. A.
    inverting amplifier
    B.
    Schmitt trigger
    C.
    non-inverting amplifier
    D.
    source follower

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  2. In a class C operation VCC = 40 V, RL = 50 Ω. The maximum load power can be

    3. A.
    64 W
    B.
    32 W
    C.
    16 W
    D.
    8 W

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  3. IF VCC = 15 V, VCEQ = 5 V and ICQ = 50 mA, the efficiency in class A operation is

    4. A.
    100%
    B.
    50%
    C.
    25%
    D.
    16.7%

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  4. A bridge rectifier circuit has a dc load current of 10 mA and a filter capacitance of 1000 μF. The peak to peak ripple voltage is

    5. A.
    0.01 V
    B.
    0.05 V
    C.
    0.1 V
    D.
    0.5 V

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  5. Which of the following best represents the bandwidth of an actual op-amp?

    6. A.
    100 Hz to 1 MHz
    B.
    0 Hz to 100 kHz
    C.
    0 Hz to 10 MHz
    D.
    0 Hz to infinity

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  6. For an ideal noise free transistor amplifier the noise factor is

    7. A.
    zero
    B.
    zero dB
    C.
    1 dB
    D.
    depends on other factors

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  7. In a crystal

    8. A.
    the frequencies of series and parallel resonance are equal
    B.
    the frequency of series resonance is more than frequency of parallel resonance
    C.
    the frequency of parallel resonance is more than frequency of series resonance
    D.
    None of the above

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  8. Ultra high frequency oscillators work in the range

    9. A.
    20 Hz to 20 kHz
    B.
    1 kHz to 30 kHz
    C.
    30 kHz to 30 MHz
    D.
    above 30 MHz

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  9. N-channel FETs are superior to p-channel FETs because

    10. A.
    mobility of electrons is smaller than that of holes
    B.
    mobility of electrons is greater than that of holes
    C.
    they consume less power
    D.
    they have high switching time

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  10. In the circuit of figure, v0 =

    11. A.
    3 v1 + 4 v2
    B.
    -3 v1 - 4 v2
    C.
    4 v1 + 3 v2
    D.
    -4 v1 - 3 v2

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