Zener diode

In a Zener diode with high breakdown voltage

• Both P and N are heavily doped

• Both P and N are lightly doped

• Either P or N is lightly doped

• None of the above

In Zener diode, the Zener breakdown takes place

• above 6V

• below 6V

• at 6V

• none of these above

The current in a Zener diode is controlled by

• Zener diode resistance

• Potential barrier

• Reverse bias voltage

• External circuits

A zener diode when biased correctly

• Acts as a fixed resistance

• Never overheats

• Never overheats

• Has a constant current passing through it

In Zener diode, the breakdown is due to Zener, has doping

• Lowest

• low

• high

• moderate

In a zener diode_________________

• Negative resistance characteristic exists

• Forward voltage rating is high

• Sharp breakdown occurs at low reverse voltage

• All of the above

Depletion region contains

• Free holes

• Free electrons

• Immobile charge carriers

• All of the above

Depletion region behaves as

• Depletion region behaves as

• an insulator

• Conductor

• High resistance

Holes are available in

• Valence band

• Forbidden gap

• Conduction band

• None of the above

A Zener diode is based on the principle of:

• Thermionic emission

• Tunneling of charge carriers across the junction

• Diffusion of charge carriers across the junction

• None of the above