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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 3242 is a

    2. A.
    P-N-P transistor
    B.
    N-P-N transistor
    C.
    UJT
    D.
    semi-conductor diode

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  2. Low frequency response of amplifier is mainly limited by

    3. A.
    input capacitor
    B.
    bypass capacitor
    C.
    output capacitor
    D.
    biasing capacitor

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  3. With negative feedback the closed loop gain is always less than open loop gain.

    4. A.
    True
    B.
    False

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  4. As compared to a bipolar transistor, a JFET is

    5. A.
    highly sensitive to changes in input voltage
    B.
    more sensitive to changes in input voltage
    C.
    less sensitive to changes in input voltage
    D.
    equally sensitive to changes in input voltage

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  5. In a bistable multivibrator, commutating capacitors are used to

    6. A.
    increase the base storage charge
    B.
    provide ac coupling
    C.
    increase the speed of response
    D.
    alter the frequency of the output

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  6. Two 3Ω speakers in series will have a total impedance of

    7. A.
    1 Ω
    B.
    C.
    3 Ω
    D.
    6 Ω

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  7. The input resistance Ri of the amplifier shown in the figure

    8. A.
    B.
    100 kΩ
    C.
    40 kΩ
    D.
    ∞

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  8. In a CE amplifier the ac signal is increased. Which of the following will not change?

    9. A.
    Ac base voltage
    B.
    Ac collector voltage
    C.
    Ac emitter voltage
    D.
    Ac collector voltage and ac emitter voltage

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  9. The ideal op-amp has the following characteristics

    10. A.
    Ri = ∞, A = ∞, R0 = 0
    B.
    Ri = 0, A = ∞, R0 = 0
    C.
    Ri = ∞, A = 0, R0 = 0
    D.
    Ri = 0, A = ∞, R0 = ∞

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  10. The input differential stage of op-amp. 741 is baised at about 10 μA current such a low current of the input stage gives

    1. high CMRR
    2. high differential gain
    3. low differential
    4. high input impedance
    Which of these are correct?

    11. A.
    1 and 2
    B.
    1, 2 and 4
    C.
    3 and 4
    D.
    1, 2, 3 and 4

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