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CSE :: Electronic Principles

  1. Doubling the operating frequency of an inductive circuit:

  2. A.
    has no effect on the inductive reactance
    B.
    doubles the amount of inductive reactance
    C.
    multiplies the inductive reactance by 6.28
    D.
    cuts the inductive reactance in half
    E.
    None of the above

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  3. A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit?

  4. A.
    1000 V and a series resistance of 10 k Ohm
    B.
    100 V and a parallel resistance of 10 k Ohm
    C.
    100 V and a series resistance of 10 k Ohm
    D.
    1000 V and a parallel resistance of 10 kOhm
    E.
    None of the above

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  5. Which one of the following statements is true?

  6. A.
    Power dissipation of a pure capacitor increases with operating frequency
    B.
    Power dissipation of a pure capacitor decreases with operating frequency
    C.
    There is no meaningful relationship between the power dissipation of a pure capacitor and its operating frequency
    D.
    All of the above
    E.
    None of the above

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  7. A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?

  8. A.
    50 A
    B.
    12 A
    C.
    5 A
    D.
    20 A
    E.
    None of the above

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  9. If a load resistance is 1 kW, a stiff voltage source has a resistance of

  10. A.
    At least 10 Ohm
    B.
    less than 10 Ohm
    C.
    More than 100 k Ohm
    D.
    Less than 100 k Ohm
    E.
    None of the above

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  11. A typical light switch in your home is a:

  12. A.
    knife switch
    B.
    toggle switch
    C.
    rotary switch
    D.
    momentary push button switch
    E.
    None of the above

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  13. Suppose the voltage from a power outlet is 120 Vrms. What is the peak voltage?

  14. A.
    100 V
    B.
    120 V
    C.
    170 V
    D.
    180 V
    E.
    None of the above

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  15. A device that converts thermal energy to electrical energy is called a:

  16. A.
    thermocouple
    B.
    solar cell
    C.
    chemical cell
    D.
    piezoelectric devices
    E.
    None of the above

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  17. How much power is being dissipated by a 1000 W resistance that has 25 V applied to it?

  18. A.
    0.24 W
    B.
    0.625 W
    C.
    80 W
    D.
    325 kW
    E.
    None of the above

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  19. A device that converts chemical energy to electrical energy is called a:

  20. A.
    solar cell
    B.
    thermocouple
    C.
    chemical cell
    D.
    electric device
    E.
    None of the above

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