Zener Diode Quiz

What is a Zener diode primarily used for?

• Signal modulation

• Frequency generation

• Current amplification

• Voltage regulation

What happens when a Zener diode reaches its breakdown voltage?

• It allows current to flow in reverse

• It stops conducting

• It permanently damages

• It increases resistance

In which bias does a Zener diode behave like a regular diode?

• Both biases

• Forward bias

• Reverse bias

• Neither bias

What is the typical forward voltage for a silicon Zener diode?

• 5V

• 1.2V

• 0.7V

• 0.3V

What is the effect of heavy doping in a Zener diode?

• Decreases current flow

• Creates a thin depletion region

• Increases breakdown voltage

• Makes it less durable

What is the Zener breakdown voltage?

• The voltage required for forward bias

• The voltage at which current flows in reverse

• The maximum voltage a diode can handle

• The voltage at which a diode fails

What is the primary difference between Zener breakdown and avalanche breakdown?

• Avalanche breakdown is used for voltage regulation

• Zener breakdown allows controlled reverse current

• Avalanche breakdown occurs in Zener diodes

• Zener breakdown is uncontrolled

How does a Zener diode protect circuits?

• By diverting excess current

• By increasing voltage

• By blocking all current

• By amplifying signals

What happens to the voltage across a Zener diode when the input voltage increases beyond the Zener voltage?

• It decreases

• It remains constant

• It becomes zero

• It fluctuates wildly

Where is a Zener diode typically placed in a circuit for voltage regulation?

• At the power source

• In parallel with the load

• In series with the load

• At the output terminal