Voltage Sources Quiz
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Questions and Answers

What is an ideal voltage source?

  • A two-terminal device that maintains a fixed voltage drop across its terminals (correct)
  • A device whose voltage across its terminals is determined by other variables in the circuit
  • A device that varies its voltage based on load resistance
  • A device that supplies unlimited current

    • How can an ideal voltage source be specified?

  • Independently of any other variable in a circuit (correct)
  • Dependently on the output current
  • Dependently on the impedance elements
  • Dependently on the load resistance

    • What is the dual of a voltage source?

  • Impedance source
  • Inductance source
  • Current source (correct)
  • Resistance source

    • How are real-world sources of electrical energy modeled for analysis purposes?

    <p>Combination of an ideal voltage source and additional combinations of impedance elements</p> Signup and view all the answers

    Explain the difference between an independent current source and a dependent current source in an electronic circuit.

    <p>An independent current source delivers a constant current that is specified independently of any other variable in the circuit, while a dependent current source delivers a current which is proportional to some other voltage or current in the circuit.</p> Signup and view all the answers

    What is the main difference between an ideal voltage source and a real-world voltage source?

    <p>An ideal voltage source can maintain fixed voltage independent of load resistance or output current, while a real-world source cannot supply unlimited current</p> Signup and view all the answers

    What is the schematic symbol for an ideal current source driving a resistive load?

    <p>The schematic symbol for an ideal current source driving a resistive load is a circle with an arrow pointing out from it, representing the direction of the constant current.</p> Signup and view all the answers

    Define an ideal current source and explain its behavior in a circuit.

    <p>An ideal current source generates a current that is independent of the voltage changes across it. It is a mathematical model, and if the current through it can be specified independently of any other variable in a circuit, it is called an independent current source.</p> Signup and view all the answers

    What is the term sometimes used for sources fed from a negative voltage supply?

    <p>The term sometimes used for sources fed from a negative voltage supply is 'current sink'.</p> Signup and view all the answers

    How are real devices related to the ideal current source model?

    <p>Real devices can approach the behavior of an ideal current source very closely, making it a useful mathematical model for analysis and design purposes.</p> Signup and view all the answers

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