Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure. <br> <img src="/images/question-image/electrical-engineering/circuit-theorems-in-ac-analysis/1526018584-20.png" title="Circuit Theorems In Ac Analysis mcq question image" alt="Circuit Theorems In Ac Analysis mcq question image">

Referring to the given circuit, how much power, in watts, is delivered to the speaker at the determined frequency if VS = 4.5 VRMS?
Circuit Theorems In Ac Analysis mcq question image

Circuit Theorems In Ac Analysis mcq question image

A

226 mW

B

2.26 mW

C

4.24 mW

D

424 mW

Determine V_TH for the circuit external to RL in the given figure.
Circuit Theorems In Ac Analysis mcq question image

A

135 ∠63.4° V

B

13.5 ∠63.4° V

C

13.5 ∠0° V

D

135 ∠0° V

Referring to the given figure, determine Z_TH as seen by RL if R1 is changed to 3.3 kΩ.
Circuit Theorems In Ac Analysis mcq question image

A

1488 ∠-70.7° Ω

B

3859 ∠-31.2° Ω

C

5180 ∠-50.5° Ω

D

1828 ∠-50.2° Ω

For the circuit given, determine the Thevenin voltage as seen by RL.
Circuit Theorems In Ac Analysis mcq question image

A

0.574 ∠16.7° V

B

5.74 ∠16.7° V

C

0.574 ∠-16.7° V

D

5.74 ∠-16.7° V

Referring to the given circuit, determine Z_TH as seen by RL.
Circuit Theorems In Ac Analysis mcq question image

A

1444 ∠-48.5° Ω

B

4176 ∠-73.3° Ω

C

956 ∠-48.5° Ω

D

1444 ∠-73.3° Ω

Determine V_TH when R1 is 180 Ω and XL is 90 Ω.
Circuit Theorems In Ac Analysis mcq question image

A

135∠63.4° V

B

13.5∠63.4° V

C

12.2∠0° V

D

122∠0° V

Determine V_TH if R1 is changed to 3.3 kΩ.
Circuit Theorems In Ac Analysis mcq question image

A

0.574 ∠16.7° V

B

4.63 ∠16.7° V

C

4.63 ∠39.5° V

D

0.463 ∠39.5° V

For the circuit shown, determine Z_TH for the portion of the circuit external to RL.
Circuit Theorems In Ac Analysis mcq question image

A

66.7 ∠-33.7° kΩ

B

6.67 ∠-333.7° kΩ

C

14.4 ∠-56.3° kΩ

D

1.44 ∠-33.7° kΩ

Referring to the given circuit, what is V_TH if VS = 12 ∠0° V?
Circuit Theorems In Ac Analysis mcq question image

A

4.69 ∠38.7° V

B

9.38 ∠38.7° V

C

12 ∠0° V

D

6 ∠0° V

Referring to the given circuit, find Z_TH if VS is 180° V.
Circuit Theorems In Ac Analysis mcq question image

A

9.82 ∠-51.3° kΩ

B

9.38 ∠-51.3° kΩ

C

180 ∠-38.3° kΩ

D

19.2 ∠-38.3° kΩ

Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure.

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