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Master the World of Vacuum Tubes
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Master the World of Vacuum Tubes

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Questions and Answers

What is the primary function of a thermionic tube or thermionic valve?

  • Control of electric current flow in a low vacuum
  • Acceleration of electrons from anode to cathode
  • Signal amplification and current rectification (correct)
  • Detection of light intensities

    • How does a vacuum phototube achieve electron emission?

  • Through thermionic emission
  • By heating the cathode
  • Through the photoelectric effect (correct)
  • By accelerating electrons from the cathode to the anode

    • Who invented the simplest vacuum tube, the diode?

  • Nikola Tesla
  • Thomas Edison
  • John Ambrose Fleming (correct)
  • Albert Einstein

    • In a vacuum tube, in which direction do electrons flow?

    <p>From the cathode to the anode</p> Signup and view all the answers

    What is the main function of a vacuum tube?

    <p>Controls electric current flow in a high vacuum</p> Signup and view all the answers

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