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ZENER DIODE MCQs

Total Questions : 20 | Page 1 of 2 pages
Question 1. Which of the following controls the current in a Zener diode?
  1.    External circuits
  2.    Reverse bias voltage
  3.    Potential barrier
  4.    Zener diode resistance
 Discuss Question
Answer: Option A. -> External circuits
Question 2. A Zener diode when biased correctly
  1.    Never overheats
  2.    Has a constant voltage across it
  3.    Acts as a fixed resistance
  4.    Has a constant current passing through it
 Discuss Question
Answer: Option B. -> Has a constant voltage across it
Question 3. In Zener diode, the breakdown is due to Zener, has a doping
  1.    High
  2.    Moderate
  3.    Lowest
  4.    Low
 Discuss Question
Answer: Option A. -> High
Question 4. In a Zener diode
  1.    Negative resistance characteristic exists
  2.    Forward voltage rating is high
  3.    Sharp breakdown occurs at a low reverse voltage
  4.    All of the above
 Discuss Question
Answer: Option C. -> Sharp breakdown occurs at a low reverse voltage
Question 5. Which one of the following breakdowns occurs in the thin region?
  1.    Avalanche
  2.    Zener
  3.    Both a and b
  4.    None of the above
 Discuss Question
Answer: Option B. -> Zener
Question 6. In which direction does the Zener diode operate?
  1.    Forward bias
  2.    Reverse bias
  3.    Both a and b
  4.    None of the above
 Discuss Question
Answer: Option C. -> Both a and b
Question 7. Which one of the following is a type of reverse breakdown in the Zener diode?
  1.    Avalanche
  2.    Zener
  3.    Both a and b
  4.    None of the above
 Discuss Question
Answer: Option C. -> Both a and b
Question 8. In a Zener diode with a high breakdown voltage has
  1.    Lightly doped P and N
  2.    P or N is lightly doped
  3.    Heavily doped P and N
  4.    None of these
 Discuss Question
Answer: Option A. -> Lightly doped P and N
Question 9. In which breakdown the breakdown voltage increase with an increase in temperature?
  1.    Zener
  2.    PN junction
  3.    Avalanche
  4.    None of the above
 Discuss Question
Answer: Option C. -> Avalanche
Question 10. What are the disadvantages of the Zener diode?
  1.    Fewer parts
  2.    Simpler construction
  3.    Low current
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above

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