Q.1
Referring to the given circuit, determine ZTH as seen by RL.
  • 1444 ∠-48.5° Ω
  • 4176 ∠-73.3° Ω
  • 956 ∠-48.5° Ω
  • 1444 ∠-73.3° Ω
Q.2
Referring to the given figure, determine ZTH as seen by RL if R1 is changed to 3.3 kΩ.
  • 1488 ∠-70.7° Ω
  • 3859 ∠-31.2° Ω
  • 5180 ∠-50.5° Ω
  • 1828 ∠-50.2° Ω
Q.3
Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure.
  • 1,027 Hz
  • 10,270 Hz
  • 6,330 Hz
  • 63,330 Hz
Q.4
Referring to the given circuit, find ZTH if R iskΩ and RL iskΩ.
  • 89.82 ∠-51.3° kΩ
  • 19.2 ∠-38.3° kΩ
  • 9.38 ∠-51.3° kΩ
  • 180 ∠-38.3° kΩ
Q.5
Determine VTH for the circuit external to RL in the given figure.
  • 135 ∠63.4° V
  • 13.5 ∠63.4° V
  • 13.5 ∠0° V
  • 135 ∠0° V
Q.6
Referring to the given circuit, L
  • Must be in parallel with RL
  • Must be placed in parallel with VS
  • Must have a reactance equal to XC
  • Has no effect on the result
Q.7
Referring to the given circuit, what is VTH if VS =∠V?
  • 4.69 ∠38.7° V
  • 9.38 ∠38.7° V
  • 12 ∠0° V
  • 6 ∠0° V
Q.8
Referring to the given circuit, find ZTH if VS isV.
  • 9.82 ∠-51.3° kΩ
  • 9.38 ∠-51.3° kΩ
  • 180 ∠-38.3° kΩ
  • 19.2 ∠-38.3° kΩ
Q.9
For the circuit shown, determine ZTH for the portion of the circuit external to RL.
  • 66.7 ∠-33.7° kΩ
  • 6.67 ∠-333.7° kΩ
  • 14.4 ∠-56.3° kΩ
  • 1.44 ∠-33.7° kΩ
Q.10
Referring to the given circuit, what is ZTH if R1 is changed toΩ?
  • 225 ∠12.1° Ω
  • 225 ∠77.9° Ω
  • 46 ∠77.9° Ω
  • 46 ∠12.1° Ω
Q.11
Referring to the given circuit, find ZTH for the part of the circuit that is external to RL.
  • 129 ∠21.4° Ω
  • 43.7 ∠68.6° Ω
  • 43.7 ∠21.4° Ω
  • 12.9 ∠68.6° Ω
Q.12
Determine VTH when R1 isΩ and XL isΩ.
  • 135∠63.4° V
  • 13.5∠63.4° V
  • 12.2∠0° V
  • 122∠0° V
Q.13
Referring to the given circuit, how much power, in watts, is delivered to the speaker at the determined frequency if VS = 4.5 VRMS?
  • 226 mW
  • 2.26 mW
  • 4.24 mW
  • 424 mW
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