Two-Terminal Devices Questions and Answers

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Showing 10 of 29 questions
Q21
What is the ratio IP / IV for gallium arsenide?
  • A 1:1
  • B 5:1
  • C 10:1
  • D 20:1
Answer: Option D
Q22
What is the response time of light-emitting diodes (LEDs)?
  • A Less than 100 ns
  • B 50 ms
  • C 100 ms to 300 ms
  • D 400 ms
Answer: Option A
Q23
What type of temperature coefficient do thermistors have?
  • A Positive
  • B Negative
  • C Either positive or negative
  • D None of the above
Answer: Option C
Q24
Which of the following diodes has a negative-resistance region?
  • A Schottky
  • B Varactor
  • C Tunnel
  • D Power
Answer: Option C
Q25
The tuning diode is a ________-dependent, variable ________.
  • A voltage, resistor
  • B current, capacitor
  • C voltage, capacitor
  • D current, inductor
Answer: Option C
Q26
What is the response time of cadmium sulfide (CdS) in photoconductive cells?
  • A 100 ms
  • B 50 ms
  • C 25 ms
  • D 10 ms
Answer: Option A
Q27
The PIV rating of power diodes can be increased by stacking the diodes in series.
  • A TRUE
  • B FALSE
Answer: Option A
Q28
What are the typical ranges of reverse-bias current levels IS for low-power and high-power Schottky diodes at room temperature?
  • A Picoamperes, nanoamperes
  • B Nanoamperes, microamperes
  • C Microamperes, milliamperes
  • D Milliamperes, amperes
Answer: Option C
Q29
The current capability of power diodes can be increased by placing two or more in series.
  • A TRUE
  • B FALSE
Answer: Option B

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