High Frequency Response MCQ

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

• In an RC coupled CE amplifier, when the input frequency increases, which of these are incorrect?
  ক

  Reactance CSH decreases

  খ

  Voltage gain increases

  গ

  Voltage gain decreases due to shunt capacitance

  ঘ

  An RC coupled amplifier behaves like a low pass filter
• Given a MOSFET where gate to source capacitance is 300 pF and gate to drain capacitance is 500 pF. Calculate the gain bandwidth product if the transconductance is 30 mΩ-1.
  ক

  5.98 Mhz

  খ

  4.9 Mhz

  গ

  6.5Mhz

  ঘ

  5.22Mhz
• Given that transition capacitance is 5 pico F and diffusion capacitance is 80 pico F, and base emitter dynamic resistance is 1500 Ω, find the β cut-off frequency.
  ক

  7.8 x 106 rad/s

  খ

  8.0 x 106 rad/s

  গ

  49.2 x 106 rad/s

  ঘ

  22.7 x 106 rad/s
• Consider a CE circuit, where trans-conductance is 50mΩ-1, diffusion capacitance is 100 pF, transition capacitance is 3 pF. IB = 20μA. Given base emitter dynamic resistance, rbe = 1000 Ω, input VI is 20*sin(107t). What is the short circuit current gain?
  ক

  30

  খ

  35

  গ

  40

  ঘ

  100
• We cannot use h-parameter model in high frequency analysis because ____________
  ক

  They all can be ignored for high frequencies

  খ

  Junction capacitances are not included in it

  গ

  Junction capacitances have to be included in it

  ঘ

  AC analysis is difficult for high frequency using it