Electrical Engineering - Circuit Theorems in AC Analysis

Exercise :: Circuit Theorems in AC Analysis - General Questions

16. 

Referring to the given circuit, determine ZTH as seen by RL.

A. 1444–48.5°
B. 4176 –73.3°
C. 956 –48.5°
D. 1444 –73.3°

Answer: Option A

Explanation:

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17. 

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

Answer: Option D

Explanation:

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18. 

The Norton equivalent current is

A. the current through the load
B. the open-current from the source
C. the short circuit current
D. none of the above

Answer: Option C

Explanation:

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19. 

Determine VTH if R1 is changed to 3.3 k.

A. 0.57416.7° V
B. 4.6316.7° V
C. 4.6339.5° V
D. 0.46339.5° V

Answer: Option C

Explanation:

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20. 

Referring to the given circuit, what is VTH if VS = 120° V?

A. 4.6938.7° V
B. 9.3838.7° V
C. 120° V
D. 60° V

Answer: Option B

Explanation:

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