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MCQs

Total Questions : 25 | Page 3 of 3 pages
Question 21. If gate current is increased, then anode-cathode voltage at which SCR closes ___________
  1.    Is decreased
  2.    Is increased
  3.    Remains the same
  4.    None of the above
 Discuss Question
Answer: Option A. -> Is decreased
Question 22. When SCR is OFF, the current in the circuit is ___________
  1.    Exactly zero
  2.    Small leakage current
  3.    Large leakage current
  4.    None of the above
 Discuss Question
Answer: Option B. -> Small leakage current
Question 23. An SCR has ___________ semiconductor layers
  1.    Two
  2.    Three
  3.    Four
  4.    None of the above
 Discuss Question
Answer: Option C. -> Four
Question 24. An SCR is sometimes called ___________
  1.    Triac
  2.    Diac
  3.    Unijunction transistor
  4.    Thyristor
 Discuss Question
Answer: Option D. -> Thyristor
Question 25. An SCR combines the features of ___________
  1.    A rectifier and resistance
  2.    A rectifier and transistor
  3.    A rectifier and capacitor
  4.    None of the above
 Discuss Question
Answer: Option B. -> A rectifier and transistor

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