A-002-02: Diodes - point-contact, junction, hot-carrier, Zener, etc.
A-002-02-01:
What is the principal characteristic of a zener diode?
A constant voltage under conditions of varying current
A constant current under conditions of varying voltage
A negative resistance region
An internal capacitance that varies with the applied voltage
A-002-02-02:
What type of semiconductor diode varies its internal capacitance as the voltage applied to its terminals varies?
Varactor
Zener
Silicon-controlled rectifier
Hot-carrier
A-002-02-03:
What is a common use for the hot-carrier diode?
As VHF and UHF mixers and detectors
As balanced mixers in FM generation
As a variable capacitance in an automatic frequency control circuit
As a constant voltage reference in a power supply
A-002-02-04:
What limits the maximum forward current in a junction diode?
Junction temperature
Forward voltage
Back EMF
Peak inverse voltage
A-002-02-05:
What are the major ratings for junction diodes?
Maximum forward current and PIV
Maximum reverse current and capacitance
Maximum forward current and capacitance
Maximum reverse current and PIV
A-002-02-06:
Structurally, what are the two main categories of semiconductor diodes?
Junction and point contact
Vacuum and point contact
Electrolytic and point contact
Electrolytic and junction
A-002-02-07:
What is a common use for point contact diodes?
As an RF detector
As a constant current source
As a constant voltage source
As a high voltage rectifier
A-002-02-08:
What is one common use for PIN diodes?
As an RF switch
As a constant current source
As a high voltage rectifier
As a constant voltage source
A-002-02-09:
A Zener diode is a device used to:
regulate voltage
dissipate voltage
decrease current
increase current
A-002-02-10:
If a Zener diode rated at 10 V and 50 watts were operated at maximum dissipation rating, it would conduct ____ amperes:
5
50
0.05
0.5
A-002-02-11:
The power-handling capability of most Zener diodes is rated at 25 degrees C or approximately room temperature. If the temperature is increased, the power handling capability is:
less
the same
much greater
slightly greater
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