Transistor Basics Quiz
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Questions and Answers

Who discovered the electron in 1898?

  • Thomson (correct)
  • Lee De Forest
  • Mervin Kelly
  • Julius Edgar Lilienfield
  • Which device was unreliable and consumed a lot of power according to the given text?

  • Point contact transistor
  • Triode in vacuum tube (correct)
  • Junction transistor
  • Transistor radio
  • Who proposed the basic principle behind the MOS field-effect transistor?

  • Mervin Kelly
  • Oskar Heil
  • Thomson
  • Julius Edgar Lilienfield (correct)
  • Who was the team leader of the solid state department at Bell Labs?

    <p>Bill Shockley</p> Signup and view all the answers

    Which company received a license from Bell Labs to build transistors?

    <p>Sony</p> Signup and view all the answers

    In what year did Sony receive a license from Bell Labs to build transistors?

    <p>1950</p> Signup and view all the answers

    Who founded Shockley Semiconductor?

    <p>Bill Shockley</p> Signup and view all the answers

    Which physicist patented the field effect transistor in 1934?

    <p>Oskar Heil</p> Signup and view all the answers

    What is a transistor?

    <p>An electronic device made of a semiconductor that can act as an insulator and a conductor</p> Signup and view all the answers

    Which invention was probably the most important of the 20th Century, according to Ira Flatow?

    <p>Transistor</p> Signup and view all the answers

    What is the main function of a transistor?

    <p>To switch or amplify signals</p> Signup and view all the answers

    Which invention replaced vacuum tubes?

    <p>Transistors</p> Signup and view all the answers

    Who discovered Rectification crystals that can conduct current in only one direction under certain conditions?

    <p>Ferdinand Braun</p> Signup and view all the answers

    What did John Ambrose Fleming develop?

    <p>Vacuum Tube</p> Signup and view all the answers

    What is the purpose of biasing in transistors?

    <p>To set the operating point for amplifying the AC signal</p> Signup and view all the answers

    What is the function of a DC load line in a transistor circuit?

    <p>It shows the range of operation between cut-off and saturation points</p> Signup and view all the answers

    In a transistor circuit, what is the significance of the quiescent point?

    <p>It marks the operating point of the transistor without time varying sources</p> Signup and view all the answers

    What is the relation between input/output phase in Common Base transistor configuration?

    <p>180°</p> Signup and view all the answers

    Which type of transistor configuration exhibits high voltage gain?

    <p>Common Emitter</p> Signup and view all the answers

    What type of DC biasing circuit uses a voltage divider?

    <p>Voltage divider bias circuit</p> Signup and view all the answers

    What is the expression for base current in a fixed-bias circuit?

    <p>$IB = \frac{V_{CC} - V_{BE}}{RB}$</p> Signup and view all the answers

    What happens when a transistor is operating in saturation?

    <p>Collector current is at its maximum value</p> Signup and view all the answers

    Which type of transistor configuration exhibits low input impedance?

    <p>Common Base</p> Signup and view all the answers

    In a fixed bias configuration, the Q-point is the operating point where:

    <p>the value of IB sets the values of VCE and IC</p> Signup and view all the answers

    In the emitter-stabilized bias circuit, adding a resistor (RE) to the emitter circuit stabilizes the bias circuit by:

    <p>improving the stability of the transistor</p> Signup and view all the answers

    The collector-emitter loop in the improved biased stability circuit can be described by the equation:

    <p>VCE = VCC – IC (RC + RE)</p> Signup and view all the answers

    The saturation level in a transistor can be determined from the endpoints of the load line where:

    <p>IC = 0 mA and VCE = 0 V</p> Signup and view all the answers

    In the voltage divider bias configuration, the currents and voltages are nearly independent of variations in b, which refers to:

    <p>transistor gain</p> Signup and view all the answers

    The approximate analysis for the voltage divider bias configuration is valid when:

    <p>$IB &lt;&lt; 10R_2$</p> Signup and view all the answers

    In a DC bias with voltage feedback, adding a feedback path from collector to base improves the stability of the bias circuit by:

    <p>making the Q-point independent of transistor beta, b</p> Signup and view all the answers

    The load line analysis for transistor saturation level determines the saturation endpoints as:

    <p>$VCE = 0V$ and $IC = VCC / RC$</p> Signup and view all the answers

    "Circuit Values Affect the Q-Point more" implies that changes in circuit values like resistors have a greater impact on:

    <p>$IC$</p> Signup and view all the answers

    The base-emitter loop in the emitter-stabilized bias circuit can be described by the equation:

    <p>$I_B = \frac{VCC - VBE}{RB + (b + 1)RE}$</p> Signup and view all the answers

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