Electronics-semiconductor Principles

Electronics-semiconductor Principles
31. A covalent bond is when atoms lose valence shell electrons.
  • TRUE
  • FALSE
Show Answer
32. When a voltage is placed across a semiconductor, free electrons move toward the negative voltage.
  • TRUE
  • FALSE
Show Answer
33. The first transistor was invented in 1938.
  • TRUE
  • FALSE
Show Answer
34. Germanium is the most widely used semiconductor material because of its stability at high temperatures.
  • TRUE
  • FALSE
Show Answer
35. The natural elements carbon, germanium, and silicon are semiconductors.
  • TRUE
  • FALSE
Show Answer
36. The P-N junction is a barrier to electron flow.
  • TRUE
  • FALSE
Show Answer
37. The number of electrons in the outer shell of carbon, germanium, and silicon is 5.
  • TRUE
  • FALSE
Show Answer
38. The n-type semiconductor material is doped by adding material with electron holes.
  • TRUE
  • FALSE
Show Answer
39. Ionization within a P-N junction causes a layer on each side of the barrier called the:
  • junction
  • depletion region
  • barrier voltage
  • forward voltage
Show Answer
40. What is the most significant development in electronics since World War II?
  • the development of color TV
  • the development of the diode
  • the development of the transistor
  • the development of the TRIAC
Show Answer
Electronics
Questions and Answers for Competitive Exams Various Entrance Test