Podcast
Questions and Answers
Who developed the 1st vacuum in 1904?
Who developed the 1st vacuum in 1904?
- John Ambrose Fleming (correct)
- Edison
- Lee De Forest
- Thomas Edison
What does a Fleming Diode do?
What does a Fleming Diode do?
- Allows electric current flow in both directions
- Blocks all electric current
- Generates heat
- Allows electric current flow in one direction (correct)
What is the main function of a cathode in a vacuum tube?
What is the main function of a cathode in a vacuum tube?
- Emits free electrons (correct)
- Generates thermal energy
- Blocks the flow of electrons
- Collects free electrons
Why are vacuum tubes considered advantageous?
Why are vacuum tubes considered advantageous?
What is the primary disadvantage of vacuum tubes compared to semiconductor devices?
What is the primary disadvantage of vacuum tubes compared to semiconductor devices?
In which year did Lee De Forest invent the vacuum tube?
In which year did Lee De Forest invent the vacuum tube?
What is the simplest form of vacuum tube?
What is the simplest form of vacuum tube?
Which vacuum tube has 3 electrodes, including a control grid?
Which vacuum tube has 3 electrodes, including a control grid?
Who invented the tetrode vacuum tube in 1926?
Who invented the tetrode vacuum tube in 1926?
What is the purpose of the screen grid in a vacuum tetrode?
What is the purpose of the screen grid in a vacuum tetrode?
Which vacuum tube has a suppressor grid placed between the screen grid and plate?
Which vacuum tube has a suppressor grid placed between the screen grid and plate?
What does the control grid do in a vacuum tube?
What does the control grid do in a vacuum tube?
What is the function of the suppressor grid in a gas-filled tube?
What is the function of the suppressor grid in a gas-filled tube?
What happens when an N-type material is fused with a P-type material?
What happens when an N-type material is fused with a P-type material?
What is the role of acceptor ions in the P-type material along the PN junction?
What is the role of acceptor ions in the P-type material along the PN junction?
What creates a potential barrier zone around the PN junction?
What creates a potential barrier zone around the PN junction?
How does a gas-filled tube operate?
How does a gas-filled tube operate?
What is the purpose of the depletion layer in a semiconductor diode?
What is the purpose of the depletion layer in a semiconductor diode?
