1 ASSIGNMENT 1 Textbook assignment: Chapter 1, “Semiconductor Diodes,” pages 1-1 through 1-47. _________________________________________________________________________________ 1-1.   Which of the following electronic devices operates by virtue of the movement of electrons within a solid piece of semiconductor material? 1.    Transistor 2.    Junction diode 3.    Solid-state device 4.    Each of the above 1-2.   Which of the following electronic devices is a minute piece of semiconductor material that can produce complete electronic circuit functions? 1.    Zener diode 2.    Light-emitting diode 3.    Integrated circuit 4.    Field effect transistor 1-3.   Which of the following terms is used for the decrease in resistance as the temperature of the semiconductor increases? 1.    Positive temperature coefficient 2.    Negative temperature coefficient 3.    Faraday temperature coefficient 4.    Zero temperature coefficient 1-4.   In addition to rectifying properties, selenium has the property of being light sensitive. How is selenium's resistance affected by light? 1.    It decreases with an increase in light intensity 2.    It increases with an increase in light intensity 3.    It remains constant with variation in light intensity 4.    It increases regardless of the variation in light intensity 1-5.   One of the most sensitive elements of semiconductor materials is galena. Galena is a crystalline form of what material? 1.    Krypton 2.    Bismuth 3.    Strontium 4.    Lead sulfide 1-6.   What significant discovery caused a breakthrough in the development of semiconductor devices? 1.    The junction diode 2.    The junction barrier 3.    The extrinsic semiconductor 4.    The point-contact transistor 1-7.   Which of the following devices is frequently used to regulate power supply voltages at precise levels? 1.    Junction diode 2.    Tunnel diode 3.    Esaki diode 4.    Zener diode 1-8.   Which of the following solid-state devices has both gain and fast-switching capabilities? 1.    Zener diode 2.    Tunnel diode 3.    Junction diode 4.    Point-contact diode 1-9.   Which of the following advantages, if any, does a conventional electron tube have over a semiconductor device? 1.    It is more efficient 2.    It has a longer life 3.    It is more economical 4.    None of the above