Electronic Devices-BJT and FET Frequency Response
Electronic Devices-BJT and FET Frequency Response
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