Transistor Bias Configuration MCQ

Test your knowledge with important Transistor Bias Configuration MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Transistor Bias Configuration MCQs at Bissoy

• Widlar current source was introduced to obtain a smaller output current.
  ক

  True

  খ

  False
• Consider the following circuit, where the transistors are similar Si transistors. Given I1 = 2mA, I2 = 1μA, Vcc = 12 V, find R1 and R2.
  ক

  R1 = 10kΩ, R2 = 6kΩ

  খ

  R1 = 5.6kΩ, R2 = 20kΩ

  গ

  R1 =18kΩ, R2 = any value

  ঘ

  R1 = 18kΩ, R2 = 5.6kΩ
• Considering all transistors to be similar and β is very large, when I1 = 10 mA, find current I2.
  ক

  10 mA

  খ

  50 mA

  গ

  25 mA

  ঘ

  20 mA
• Why is self bias circuit not used in IC amplifier?
  ক

  To reduce power losses

  খ

  To reduce area used on the chip

  গ

  Stability factor reduces in the IC

  ঘ

  Voltage gain is reduced
• Given Vout = 5V, β=100, I1=10mA, R1=100KΩ. Find the output resistance.
  ক

  8 kΩ

  খ

  8.163 kΩ

  গ

  7.582 kΩ

  ঘ

  8.4 kΩ
• In the circuit given, the two Si transistors are similar. Given β=50, Vcc=12V, I1=5mA. Find I?
  ক

  5 mA

  খ

  4.807 mA

  গ

  4.5 mA

  ঘ

  5.2 mA
• Consider the biasing circuit shown. The β for the circuit is large. R3 = 1kΩ, R4 = 2kΩ. The stability factor varies between 10 and 11. Find the maximum and minimum values of R2.
  ক

  Minimum = 16.36kΩ, Maximum = 20kΩ

  খ

  Minimum = 16.36kΩ, Maximum = 18kΩ

  গ

  Minimum = 10 kΩ, Maximum = 20kΩ

  ঘ

  Minimum = 6 kΩ, Maximum = 10kΩ
• BJT is biased to _________
  ক

  Work as a switch

  খ

  Prevent thermal runaway

  গ

  Increase DC collector current

  ঘ

  Operate it in the saturation region