BJT and FET Frequency Response Questions and Answers
BJT and FET Frequency Response questions with answers are a key part of electronics and communication exam preparation. They focus on transistor behavior, gain, and bandwidth characteristics under various frequency conditions. Practicing programming questions and answers on these concepts helps students build analytical and circuit analysis skills essential for GATE, PSU, and university exams. This section includes detailed explanations of BJT and FET responses, making complex electronic topics easier to understand and apply in real-world problem-solving.
BJT and FET Frequency Response
Showing 10 of
26 questions
11. What is the range of the capacitors Cgs and Cgd?
- 1 to 10 pF
- 1 to 10 nF
- 1 to 10 F
- 1 to 10 F
12. In the input RC circuit of a single-stage BJT, by how much does the base voltage lead the input voltage at the cutoff frequency in the low-frequency region?
- About 0º
- 45º
- About 90º
- None of the above
13. What is the normalized gain expressed in dB for the cutoff frequencies?
- –3 dB
- +3 dB
- –6 dB
- –20 dB
14. Which of the low-frequency cutoffs determined by CS, CC, or CE will be the predominant factor in determining the low-frequency response for the complete system?
- lowest
- middle
- highest
- None of the above
15. What is the ratio of the common logarithm of a number to its natural logarithm?
- 0.435
- 2
- 2.3
- 3.2
16. Which of the following configurations does (do) not involve the Miller effect capacitance?
- Common-emitter
- Common-base
- Common-collector
- All of the above
17. What magnitude voltage gain corresponds to a decibel gain of 50?
- 31.6238
- 316.228
- 3162.3
- 31623.8
18. By what other name(s) are the cutoff frequencies in a frequency response plot called?
- Corner frequency
- Break frequency
- Half-power frequency
- All of the above
19. The ________-frequency response of a transformer-coupled system is calculated primarily by the stray capacitance between the turns of the primary and secondary windings.
- low
- mid
- high
- [NIL]
20. What is the ratio of the output voltage to the input voltage at the cutoff frequencies in a normalized frequency response plot?
- 0.25
- 0.50
- 0.707
- 1