1 .		What is the ratio of the common logarithm of a number to its natural logarithm? [Hint]   0.435   2   2.3   3.2
2 .		logea = _____ log10a [Hint]   2.3   2.718   e   1.414
3 .		By what factor does an audio level change if the power level changes from 16 W to 1024 W? [Hint]   2   4   6   8
4 .		Refer to Example 11.6. Find the voltage gain in decibels if the output impedance changes to 100 . [Hint]   –30.01 dB   –20.0 dB   –13.01 dB   –3.01 dB
5 .		What magnitude voltage gain corresponds to a decibel gain of 50? [Hint]   31.6238   316.238   3162.38   31623.8
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. [Hint]   3 mW   30 mW   300 mW   3 W
7 .		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. [Hint]   1.225 mV   12.25 mV   122.5 mV   1.225 V
8 .		For audio systems, the reference level is generally accepted as _____. [Hint]   1 mW   1 W   10 mW   100 mW
9 .		For which of the following frequency region(s) can the coupling and bypass capacitors no longer be replaced by the short-circuit approximation? [Hint]   low-frequencies   mid-frequencies   high-frequencies   all of the above
10 .		By what other name(s) are the cutoff frequencies in a frequency response plot called? [Hint]   corner frequency   break frequency   half-power frequency   all of the above
11 .		What is the ratio of the output power to the input power at the cutoff frequencies in a normalized frequency response plot? [Hint]   0.25   0.50   0.707   1
12 .		What is the ratio of the output voltage to the input voltage at the cutoff frequencies in a normalized frequency response plot? [Hint]   0.25   0.50   0.707   1
13 .		What is the normalized gain expressed in dB for the cutoff frequencies? [Hint]   –3 dB   +3 dB   –6 dB   –20 dB
14 .		The _____-frequency response is calculated primarily by the stray capacitance between the turns of the primary and secondary windings. [Hint]   low   mid   high
15 .		The larger capacitive elements of the design will determine the _____ cutoff frequency. [Hint]   low   mid   high
16 .		The smaller capacitive elements of the design will determine the _____ cutoff frequencies. [Hint]   low   mid   high
17 .		What is the ratio of the capacitive reactance XCS to the input resistance RI of the input RC circuit of a single-stage BJT amplifier at the low-frequency cutoff? [Hint]   0.25   0.50   0.75   1.0
18 .		In the input RC circuit of a single-stage BJT, by how much does the base voltage lead the input voltage for frequencies much larger than the cutoff frequency in the low-frequency region? [Hint]   about 0º   45º   about 90º   none of the above
19 .		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? [Hint]   about 0º   45º   about 90º   none of the above
20 .		Refer to Figure 11.14. Determine the break frequency if R is changed to 10 k. [Hint]   15.915 Hz   159.15 Hz   31.85 Hz   318.5 Hz
21 .		Refer to Figure 11.17. Calculate at 0.5f1. [Hint]   63.43º   26.56º   45º   undefined
22 .		A change in frequency by a factor of _____ is equivalent to 1 octave. [Hint]   2   10   5   20
23 .		A change in frequency by a factor of _____ is equivalent to 1 decade. [Hint]   2   10   5   20
24 .		For the low-frequency response of a BJT amplifier, the maximum gain is where _____ = 0 ohms. [Hint]   RB   RC   RE
25 .		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? [Hint]   lowest   middle   highest   none of the above
26 .		Refer to Example 11.10. Determine the lower cutoff frequency of the network of Figure 11.34 if CG is changed to 100 pF. [Hint]   15.8 Hz   46.13 Hz   238.73 Hz   1575.8 Hz
27 .		Which of the following elements is (are) important in determining the gain of the system in the high-frequency region? [Hint]   interelectrode capacitances   wiring capacitances   Miller effect capacitance   all of the above
28 .		In the _____-frequency region, the capacitive elements of importance are the interelectrode (between terminals) capacitances internal to the active device and the wiring capacitance between the leads of the network. [Hint]   low   mid   high
29 .		Which of the following capacitors is (are) included in Ci for the high-frequency region of a BJT or FET amplifier? [Hint]   input wiring capacitance Cwi   the transition capacitance (Cbe/Cgs)   Miller capacitance CMi   all of the above
30 .		In the hybrid or Giacoletto model, which one of the following does rbb' include? [Hint]   base spreading resistance   base contact   base bulk   all of the above
31 .		Which of the following configurations does (do) not involve the Miller effect capacitance? [Hint]   common-emitter   common-base   common-collector   all of the above
32 .		A 3-dB drop in hfe will occur at a frequency defined by f _____. [Hint]       1   2
33 .		What is the range of the capacitors Cgs and Cgd? [Hint]   1 to 10 pF   1 to 10 nF   1 to 10 F   1 to 10 F
34 .		What is the range of the capacitor Cds? [Hint]   0.01 to 0.1 pF   0.1 to 1 pF   0.1 to 1 nF   0.1 to 1 F