Electronic Devices and Circuits - 100 MCQs with Answers

The main function of a diode is to:

• Amplify signals

• Rectify AC to DC

• Filter DC

• Store charge

In a P-N junction diode, the depletion region acts as:

• Conductor

• Insulator

• Capacitor

• Inductor

The transistor operates in active region when:

• EB reverse, CB forward

• Both forward

• EB forward, CB reverse

• Both reverse

The β (beta) of a transistor represents:

• Input resistance

• Output resistance

• Current gain

• Voltage gain

Zener diode is mainly used for:

• Signal amplification

• Voltage regulation

• Rectification

• Frequency modulation

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