Get Started
395

Q:

The first thermionic valve was invented by

  • 1
    Thomas Edison
  • 2
    Richardson
  • 3
    J. A. Fleming
  • 4
    Lead Forest
  • Show Answer
  • Workspace

Answer : 3. "J. A. Fleming"
Explanation :

The first thermionic valve, also known as a vacuum tube, was invented by John Ambrose Fleming. Fleming, a British electrical engineer, developed the vacuum tube in 1904. The device, called the Fleming valve or vacuum diode, was a crucial component in early electronics and telecommunications. It played a significant role in the development of radio technology, serving as a rectifier and amplifier. The vacuum tube was an essential invention that paved the way for the advancement of electronic systems and was widely used until the development of semiconductor technology.

The Most Comprehensive Exam Preparation Platform

Get the Examsbook Prep App Today