Silicon Controlled Rectifier - SCR MCQ Questions and Answers Quiz

31. An SCR has …………….. pn junctions

  1. Two
  2. Three
  3. Four
  4. None of the above

32. An SCR has ………….. semiconductor layers

  1. Two
  2. Three
  3. Four
  4. None of the above

33. We can control a.c. power in a load by connecting …………

  1. Two SCRs in series
  2. Two SCRs in parallel
  3. Two SCRs in parallel opposition
  4. None of the above

34. AC power in a load can be controlled by connecting

  1. Two SCRs in series
  2. Two SCRs in parallel
  3. Two SCRs in parallel opposition
  4. None of the above

35. An SCR behaves as a ……………. switch

  1. Unidirectional
  2. Bidirectional
  3. Mechanical
  4. None of the above

36. An SCR is a ……………….. triggered device

  1. Voltage
  2. Current
  3. Voltage as well as current
  4. None of the above

37. An SCR is a ...... triggered device

  1. Voltage
  2. Current
  3. Voltage as well as current
  4. None of the above

38. When an SCR is turned on, the voltage across it is about ……….

  1. Zero
  2. 10 V
  3. 1 V
  4. 1 V

39. When an SCR is turned on, the voltage across it is about ..........

  1. zero
  2. 10 V
  3. 0.1 V
  4. 1V
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