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CSE :: Electronic Principles

  1. What is the phase shift between total current and voltage, if 100 ohm resistor connected in parallel with an inductor that has a reactance of 200W?

  2. A.
    0 degree
    B.
    26.6 degree
    C.
    90 degree
    D.
    180 degree
    E.
    None of the above

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  3. When operating below its resonant frequency, a series RLC circuit has the characteristics of a:

  4. A.
    series RL circuit
    B.
    series RC circuit
    C.
    series RLC circuit operated above its resonant frequency
    D.
    purely resistive circuit
    E.
    None of the above

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  5. The valence electron of a copper atom experiences what kind of attraction toward the nucleus?

  6. A.
    Strong
    B.
    Neutral
    C.
    Weak
    D.
    Impossible to say
    E.
    None of the above

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  7. Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current?

  8. A.
    0.3 A
    B.
    0.2 A
    C.
    0.4 A
    D.
    0.6 A
    E.
    None of the above

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  9. Absolute Zero temperature equals

  10. A.
    0o C
    B.
    -273o C
    C.
    -276o C
    D.
    25o C
    E.
    None of the above

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  11. At cut off, the Q point is at

  12. A.
    upper end of the load line
    B.
    middle of the load line
    C.
    lower end of the load line
    D.
    infinity
    E.
    None of the above

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  13. The south pole of a magnet is the one:

  14. A.
    that would be attracted to the earths north magnetic pole
    B.
    that has its molecules arranged in a random pattern
    C.
    that would be attracted to the earth's south magnetic pole
    D.
    that would be repelled by the north pole of another magnet
    E.
    None of the above

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  15. Which one of the following statements is true?

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

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  17. The peak value of a sine waveform is:

  18. A.
    the amplitude at 70.7% of the maximum value
    B.
    the amplitude at 90% of the maximum value
    C.
    the amplitude at 1.41 times the maximum value
    D.
    the maximum positive or negative value
    E.
    None of the above

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  19. Which one of the following statements is true for voltage in a parallel circuit?

  20. A.
    The total voltage in a parallel circuit is equal to the average value of the individual voltages
    B.
    The total voltage in a parallel circuit is always less than the value of the smallest voltage
    C.
    The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit
    D.
    The total voltage of a parallel circuit is the same as the voltages across each branch
    E.
    None of the above

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