Thermionic Emission and Diodes Quiz

What is the primary function of a diode in an electronic circuit?

• To allow current to flow in one direction

• To convert direct current to alternating current

• To store energy

• To amplify signals

In a thermionic diode, what role does the filament play?

• It converts direct current to alternating current

• It stores electrical charge

• It acts as a resistor

• It heats the metal to release electrons

What happens to the electrons when the filament in a thermionic diode is heated?

• They are converted into protons

• They are released and attracted to the anode

• They are absorbed by the filament

• They remain stationary

Why can't current flow when the polarity of a thermionic diode is reversed?

• The electrons are repelled back to the filament

• The circuit becomes open

• The anode becomes negatively charged

• The filament stops releasing electrons

Which of the following is an application of thermionic emission?

• Thermionic diodes

• Transformers

• Capacitors

• Inductors