
Understanding PN Diodes
Authored by Sudhanya P
Engineering
KG

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a PN diode?
A PN diode is a device that can store electrical energy like a capacitor.
A PN diode is a type of transistor used for amplifying signals.
A PN diode is a type of resistor that limits current flow.
A PN diode is a semiconductor device made of p-type and n-type materials that allows current to flow in one direction.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a PN diode work?
A PN diode requires an external power source to operate.
A PN diode allows current to flow in one direction when forward-biased and blocks it when reverse-biased.
A PN diode allows current to flow in both directions.
A PN diode can amplify signals like a transistor.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the main applications of PN diodes?
Rectification, signal modulation, and light emission.
Magnetic field sensing, pressure measurement, and chemical analysis.
Power generation, data storage, and thermal insulation.
High-frequency communication, voltage regulation, and energy conversion.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between a PN diode and a Zener diode?
A PN diode allows current in one direction; a Zener diode allows reverse current at a specific voltage for regulation.
A PN diode can operate in both directions; a Zener diode cannot.
A PN diode has a higher breakdown voltage than a Zener diode.
A PN diode is used for voltage regulation; a Zener diode is not.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when a PN diode is reverse-biased?
The diode conducts current and reduces the depletion region.
The diode generates heat and increases current flow.
The diode becomes a short circuit and allows unlimited current.
The diode blocks current flow and widens the depletion region.
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