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CSE :: Electronic Principles

  1. Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value?

  2. A.
    37.4 V
    B.
    35.4 V
    C.
    38.74 V
    D.
    30.4 V
    E.
    None of the above

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  3. What is the difference between a conductor and an insulator?

  4. A.
    A conductor allows current to flow much easier than an insulator does
    B.
    An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all
    C.
    An insulator allows current to flow much easier than a conductor does
    D.
    The difference between conductors and insulators depends on how they are used
    E.
    None of the above

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  5. A circuit has two different voltage sources that are connected in a series-aiding form. If the sources are rated at 6 V and 9 V, what is the total source voltage?

  6. A.
    15 V
    B.
    16 V
    C.
    7.5 V
    D.
    8 V
    E.
    None of the above

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  7. At room temperature an intrinsic semiconductor has

  8. A.
    a few free electrons and holes
    B.
    many holes
    C.
    many free electrons
    D.
    No holes
    E.
    None of the above

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  9. If the base supply voltage increases, the Q point moves

  10. A.
    down
    B.
    up
    C.
    nowhere
    D.
    off the load line
    E.
    None of the above

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  11. Positive ions are atoms that have

  12. A.
    Gained a proton
    B.
    Lost a proton
    C.
    Gained an electron
    D.
    Lost an electron
    E.
    None of the above

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  13. Which one of the following is a statement of Kirchhoffs current law?

  14. A.
    The current through a resistance is proportional to the value of resistance and the IR drop across it
    B.
    The total current in a parallel circuit is less than the value of the smallest current
    C.
    The algebraic sum of currents in a loop is equal to zero
    D.
    The algebraic sum of currents entering and leaving a point is equal to zero
    E.
    None of the above

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  15. Which one of the following statements is true?

  16. A.
    inductive reactance decreases with operating frequency
    B.
    inductive reactance is at a maximum for dc source voltages
    C.
    inductive reactance increases with operating frequency
    D.
    There is no meaningful relationship between inductive reactance and operating frequency
    E.
    None of the above

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  17. A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation?

  18. A.
    200 mW
    B.
    300 mW
    C.
    20 mW
    D.
    10 mW
    E.
    None of the above

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  19. Which one of the following phrasers best describes flux density?

  20. A.
    The concentration of lines of magnetic force
    B.
    The rate of change of the number of lines of magnetic force
    C.
    The opposition to a build-up of magnetic fields
    D.
    The force that maintains lines of force
    E.
    None of the above

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