Electronic Devices-Two-Terminal Devices

Electronic Devices-Two-Terminal Devices
1. Which of the following areas is (are) an application of infrared-emitting diodes?
  • Intrusion alarms
  • Shaft encoders
  • Paper-tape readers
  • All of the above
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2. Schottky diodes are very effective at frequencies approaching ________.
  • 20 GHz
  • 10 MHz
  • 100 MHz
  • 1 MHz
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3. What is the voltage drop across Schottky diodes?
  • 0 V to 0.2 V
  • 0.7 V to 0.8 V
  • 0.8 V to 1.0 V
  • 1.0 V to 1.5 V
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4. In which region is the operating point stable in tunnel diodes?
  • Negative-resistance
  • Positive-resistance
  • Both negative- and positive-resistance
  • Neither negative- nor positive-resistance
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5. What is the maximum temperature limit for liquid-crystal displays (LCDs)?
  • 10ºC
  • 30ºC
  • 60ºC
  • 100ºC
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6. Which of the following diodes is limited to the reverse-bias region in its region of operation?
  • Schottky
  • Tunnel
  • Photodiode
  • Rectifier
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7. The majority of power diodes are constructed using ________.
  • molybdenum
  • platinum
  • tungsten
  • silicon
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8. Which of the following is (are) diodes?
  • Schottky
  • Varactor
  • Tunnel
  • All of the above
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9. What is the limit of peak current IP in tunnel diodes?
  • A few microamperes to several hundred amperes
  • A few microamperes to several amperes
  • A few microamperes to several milliamperes
  • A few microamperes to several hundred microamperes
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10. What is the response time of LCDs?
  • Less than 100 ns
  • 50 ms
  • 100 ms to 300 ms
  • 400 ms
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