Circuit Theorems In Ac Analysis MCQ Questions & Answers | Electrical Engineering

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31.
Referring to the given circuit, find Z_TH for the part of the circuit that is external to RL.

A. 129 ∠21.4° Ω

B. 43.7 ∠68.6° Ω

C. 43.7 ∠21.4° Ω

D. 12.9 ∠68.6° Ω

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32.
For the circuit shown, determine Z_TH for the portion of the circuit external to RL.

A. 66.7 ∠-33.7° kΩ

B. 6.67 ∠-333.7° kΩ

C. 14.4 ∠-56.3° kΩ

D. 1.44 ∠-33.7° kΩ

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33.
Referring to the given circuit, how much power, in watts, is delivered to the speaker at the determined frequency if VS = 4.5 VRMS?

A. 226 mW

B. 2.26 mW

C. 4.24 mW

D. 424 mW

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