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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. Overall efficiency of class B amplifier is

    2. A.
    72%
    B.
    75%
    C.
    78.5%
    D.
    70%

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  2. For a transistor to have-a larger β it must have and a

    3. A.
    close to zero
    B.
    close to 0.5
    C.
    close to unity
    D.
    nearly infinite

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  3. JFET is also known as

    4. A.
    linear device
    B.
    square law device
    C.
    inverse law device
    D.
    logarithmic law device

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  4. Drain feedback bias is often used with

    5. A.
    D MOSFETs
    B.
    E MOSFETs
    C.
    both D and E MOSFETs
    D.
    neither D nor E MOSFETs

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  5. CMRR of a difference amplifier is equal to

    6. A.
    (Av')/(Acom)
    B.
    Av/Acom
    C.
    Acom/Av'
    D.
    (Av)/(Acom)2

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  6. In a class C amplifier, full cycle conductor of the current is achieved by employing

    7. A.
    tuned circuit
    B.
    transformers
    C.
    complementary pair
    D.
    Push pull configuration

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  7. Higher order active filters are used for variable

    8. A.
    bandwidth
    B.
    gain in the pass band
    C.
    impedance
    D.
    roll off rate

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  8. Which of the following statement is false?

    9. A.
    The gate of DMOSFET may be biased positively, zero or negatively
    B.
    N-channel enhancement-only MOSFET conducts only when its gate is highly positive
    C.
    JFET has lower input impedance than MOSFET
    D.
    The bipolar base is forward biased, JFET gate must also be forward biased

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  9. Assertion (A): The main use of Miller integrator is to generate ramp

    Reason (R): An inverting amplifier can handle more than one input at the same time.

    10. A.
    Both A and R are correct and R is correct explanation for A
    B.
    Both A and R are correct but R is not correct explanation for A
    C.
    A is correct R is wrong
    D.
    A is wrong R is correct

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  10. In figure, IC ≈

    11. A.
    I1
    B.
    IB
    C.
    0.5 I1
    D.
    0.5 IB

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