Special-Purpose Diodes Questions and Answers

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Showing 10 of 19 questions
Q1
Schottky diodes are also known as
  • A PIN diodes.
  • B hot carrier diodes.
  • C step-recovery diodes.
  • D tunnel diodes.n
Answer: Option B
Q2
Zener diodes with breakdown voltages less than 5 V operate predominantly in what type of breakdown?
  • A avalanche
  • B zener
  • C varactor
  • D Schottky
Answer: Option B
Q3
The Schottky diode is used
  • A in high-power circuits.
  • B in circuits requiring negative resistance.
  • C in very fast-switching circuits.
  • D in power supply rectifiers.
Answer: Option C
Q4
You have an application for a diode to be used in a tuning circuit. A type of diode to use might be
  • A an LED.
  • B a Schottky diode.
  • C a Gunn diode.
  • D a varactor.
Answer: Option D
Q5
What kind of diode is formed by joining a doped semiconductor region with a metal?
  • A laser
  • B tunnel
  • C pin
  • D Schottky
Answer: Option D
Q6
Which diode employs graded doping?
  • A zener
  • B LED
  • C tunnel
  • D step-recovery
Answer: Option D
Q7
LEDs are made out of
  • A silicon.
  • B germanium.
  • C gallium.
  • D silicon and germanium, but not gallium.
Answer: Option C
Q8
The normal operating region for a zener diode is the
  • A forward-bias region.
  • B reverse-bias region.
  • C zero-crossing region.
  • D reverse-breakdown region.
Answer: Option D
Q9
A 6.2 V zener is rated at 1 watt. The maximum safe current the zener can carry is
  • A 1.61 A.
  • B 161 mA.
  • C 16.1 mA.
  • D 1.61 mA.
Answer: Option B
Q10
The process of emitting photons from a semiconductive material is called
  • A photoluminescence.
  • B gallium arsenide.
  • C electroluminescence.
  • D gallium phosphide.
Answer: Option C

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