2. 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.
3. A 3-dB drop in hfe will occur at a frequency defined by ________.
4. 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.
5. The larger capacitive elements of the design will determine the ________ cutoff frequency.
6. Which of the following elements is (are) important in determining the gain of the system in the high-frequency region?
7. The input power to a device is 10,000 W at 1000 V. The output power is 500 W, and the output impedance is 100 . Find the voltage gain in decibels.
8. By what factor does an audio level change if the power level changes from 4 W to 4096 W?
9. For audio systems, the reference level is generally accepted as ________.
10. What is the range of the capacitors Cgs and Cgd?
11. For the low-frequency response of a BJT amplifier, the maximum gain is where ________ .
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?
13. What is the normalized gain expressed in dB for the cutoff frequencies?
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?
15. Determine the break frequency for this circuit.
16. What is the ratio of the common logarithm of a number to its natural logarithm?
17. Which of the following configurations does (do) not involve the Miller effect capacitance?
18. What magnitude voltage gain corresponds to a decibel gain of 50?
19. By what other name(s) are the cutoff frequencies in a frequency response plot called?
20. The ________-frequency response of a transformer-coupled system is calculated primarily by the stray capacitance between the turns of the primary and secondary windings.
21. logea = ________ log10a
22. In the hybrid or Giacoletto model, which one of the following does rb include?
23. What is the ratio of the output voltage to the input voltage at the cutoff frequencies in a normalized frequency response plot?
24. Which of the following statements is true for a square-wave signal?
25. A change in frequency by a factor of ________ is equivalent to 1 decade.