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ECE :: Electronic Devices and Circuits

Electronic Devices and Circuits - Section 1
Electronic Devices and Circuits - Section 2
Electronic Devices and Circuits - Section 3
Electronic Devices and Circuits - Section 4
Electronic Devices and Circuits - Section 5
Electronic Devices and Circuits - Section 6
Electronic Devices and Circuits - Section 7
Electronic Devices and Circuits - Section 8
Electronic Devices and Circuits - Section 9
Electronic Devices and Circuits - Section 10
Electronic Devices and Circuits - Section 11
Electronic Devices and Circuits - Section 12
Electronic Devices and Circuits - Section 13
Electronic Devices and Circuits - Section 14
Electronic Devices and Circuits - Section 15
Electronic Devices and Circuits - Section 16
Electronic Devices and Circuits - section-17
Electronic Devices and Circuits - Section-18

  1. Which of the following could be the maximum current rating of junction diode by 126?

    2. A.
    1 A
    B.
    10 A
    C.
    20 A
    D.
    100 A

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  2. Each cell of a static Random Access memory contains

    3. A.
    6 MOS transistor
    B.
    4 MOS transistor, 2 capacitor
    C.
    2 MOS transistor, 4 capacitor
    D.
    1 MOS transistor and 1 capacitor

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  3. An electron in the conduction band

    4. A.
    has higher energy than the electron in the valence band
    B.
    has lower energy than the electron in the valence band
    C.
    loses its charge easily
    D.
    jumps to the top of the crystal

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  4. The magnetization 'm' of a superconductor in a field of H is

    5. A.
    extremely small
    B.
    - H
    C.
    - 1
    D.
    Zero

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  5. The number of free electrons in acceptor atom is

    6. A.
    1
    B.
    2
    C.
    3
    D.
    4

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  6. Maximum rectification efficiency for a half wave rectifier is

    7. A.
    100%
    B.
    88%
    C.
    50%
    D.
    40.6%

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  7. For a semiconductor, the conductivity is a function of the products of the number of charge carriers and their mobilites. As result, if the temperature of a slab of intrinsic silicon increases, how does its conductivity vary?

    8. A.
    Decreases
    B.
    Increases
    C.
    Remains unaffected
    D.
    Increases or decreases depending upon the rise in temperature

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  8. In a junction transistor, the collector cut-off current 'ICB0' reduces considerably by doping the

    9. A.
    emitter with high level of impurity
    B.
    emitter with low level of impurity
    C.
    collector with high level of impurity
    D.
    collector with low level of impurity

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  9. A Schottky diode clamp is used along with a switching BJT for

    10. A.
    reducing the power
    B.
    reducing the switching time dissipation
    C.
    increasing the value of β
    D.
    reducing the base current

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  10. The first dominant pole encountered in the frequency response of a compensated op-amp is approximately at

    11. A.
    5 Hz
    B.
    10 kHz
    C.
    1 MHz
    D.
    100 MHz

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