 A. True
 B. False
Circuit Theorems In Ac Analysis

In order to get maximum power transfer from a capacitive source, the load must have an impedance that is the complex conjugate of the source impedance.

The Norton equivalent current is_____.
 A. The current through the load
 B. The opencurrent from the source
 C. The short circuit current
 D. None of the above

For the given circuit, find V_{TH} for the circuit external to RL.
 A. 4.69 ∠51.3° V
 B. 4.69 ∠38.7° V
 C. 469 ∠38.7° mV
 D. 6 ∠0° V

Norton’s theorem gives_____.
 A. An equivalent current source in parallel with an equivalent impedance
 B. An equivalent current source in series with an equivalent impedance
 C. An equivalent voltage source in parallel with an equivalent impedance
 D. An equivalent voltage source in series with an equivalent impedance

Referring to the given circuit, what is VTH if VS = 12 ∠0° V?
 A. 4.69 ∠38.7° V
 B. 9.38 ∠38.7° V
 C. 12 ∠0° V
 D. 6 ∠0° V

In applying the superposition theorem,
 A. The sources are considered one at a time with all others replaced by their internal impedance
 B. All sources are considered independently
 C. All sources are considered simultaneously
 D. The sources are considered one at a time with all others replaced by their internal resistance

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

Norton’s theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent voltage source in series with an equivalent impedance.
 A. True
 B. False

Determine V_{TH} for the circuit external to RL in the given figure.
 A. 135 ∠63.4° V
 B. 13.5 ∠63.4° V
 C. 13.5 ∠0° V
 D. 135 ∠0° V

Referring to the given circuit, what is Z_{TH} if R1 is changed to 220 Ω?
 A. 225 ∠12.1° Ω
 B. 225 ∠77.9° Ω
 C. 46 ∠77.9° Ω
 D. 46 ∠12.1° Ω