WorksheetsInventors of the thermionic valve
Total questions: 10
Worksheet time: 5mins
For how much money (in TL, with the current exchange rate) did De Forest sold the vacuum tube?
6,442,211.56
5,347,555.20
4,478,955.01
5,086,659.36
Who first developed the idea of using the audion as an oscillator?
Armstrong
Whenelt
Colpitts
Stone Stone
With which historical event is concurrent the death of Lieben?
The Peloponnesian War
The Russo-Japanese War
World War II
World War I
Why is modulation with a train of coded pulses important?
Digital modulation
Information transmission
All of the rest
Carrying out zoom meetings
Why does the dominance of thermion valves decrease starting in the 50s?
Transistors
The Space Race
Quantum physics
Development of lasers
Which of the following has been possible before 1950 due to the audion?
an iPhone
Television
Supercomputer
Quantum computer
Who first added a third terminal to Fleming's diode?
Fleming himself
H. D. Arnold
John Stone Stone
Robert von Lieben
What did de Forest not do in his life?
Inventions
Getting arrested
Taking a selfie
Radio broadcasting
What characteristics does the i-V relationship exhibit in Lieben's triode?
Nonlinearity
Linearity
Trivia: Which is the very first music video played on MTV? (Hint: 1981)
You Better Run
Video Killed the Radio Star
She Won't Dance with Me
Iron Maiden
