Electronic Devices-BJT and FET Frequency Response
Electronic Devices-BJT and FET Frequency Response
2. For which of the following frequency region(s) can the coupling and bypass capacitors no longer be replaced by the short-circuit approximation?
- Low-frequency
- Mid-frequency
- High-frequency
- All of the above
3. The smaller capacitive elements of the design will determine the ________ cutoff frequencies.
- low
- mid
- high
- [NIL]
4. What is the range of the capacitor Cds?
- 0.01 to 0.1 pF
- 0.1 to 1 pF
- 0.1 to 1 nF
- 0.1 to 1 F
5. An amplifier rated at 30-W output is connected to a 5- speaker. Calculate the input voltage for the rated output if the amplifier voltage gain is 20 dB.
- 1.225 mV
- 12.25 mV
- 122.5 mV
- 1.225 V
6. An amplifier rated at 30-W output is connected to a 5- speaker. Calculate the input power required for full power output if the power gain is 20 dB.
- 3 mW
- 30 mW
- 300 mW
- 3 W
7. The larger capacitive elements of the design will determine the ________ cutoff frequency.
- low
- mid
- high
- [NIL]
8. Which of the following elements is (are) important in determining the gain of the system in the high-frequency region?
- Interelectrode capacitances
- Wiring capacitances
- Miller effect capacitance
- All of the above
9. By what factor does an audio level change if the power level changes from 4 W to 4096 W?
- 2
- 4
- 6
- 8
10. For audio systems, the reference level is generally accepted as ________.
- 1 mW
- 1 W
- 10 mW
- 100 mW