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Discussion
Home
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Electrical Engineering
‣
Circuit Theorems in AC Analysis
See What Others Are Saying!
Question
An equivalent circuit is one that produces the same voltage and current to a given load as the original circuit that it replaces.
Options
A. True
B. False
Correct Answer
True
More questions
1. In a parallel
RC
circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
Options
A. 200 mA
B. 100 mA
C. 282 mA
D. 141 mA
Show Answer
Scratch Pad
Discuss
Correct Answer: 141 mA
2. The superposition theorem is useful for the analysis of single-source circuits.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: False
3. In an
RC
differentiator, responding to repetitive pulses, the average value of the output
Options
A. is zero
B. is equal to the input voltage
C. is 63 percent of the input voltage
D. cannot be determined
Show Answer
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Discuss
Correct Answer: is zero
4. If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage
Options
A. remains unchanged
B. reverses polarity
C. increases
D. decreases
Show Answer
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Discuss
Correct Answer: increases
5.
V
out
= 500 mV, and
V
in
= 1.3 V. The ratio
V
out
/
V
in
expressed in dB is
Options
A. 0 dB
B. 8.30 dB
C. ?8.30 dB
D. 0.8 dB
Show Answer
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Discuss
Correct Answer: ?8.30 dB
6. Referring to Problem 23, the reactive power is
Options
A. 10 mVAR
B. 100 mVAR
C. 6.76 mVAR
D. 148 mVAR
Show Answer
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Discuss
Correct Answer: 100 mVAR
7. A sinusoidal voltage with a peak-to-peak value of 18 V is applied to an
RC
low-pass filter. If the reactance at the input frequency is zero, the output voltage is
Options
A. 18 V peak-to-peak
B. zero
C. 9 V peak-to-peak
D. 12.74 V peak-to-peak
Show Answer
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Discuss
Correct Answer: zero
8. In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
9. When converting 0.16 mA to microamperes, the result is
Options
A. 16 ľA
B. 160 ľA
C. 1,600 ľA
D. 0.0016 ľA
Show Answer
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Discuss
Correct Answer: 160 ľA
10. A simple three-phase generator consists of three conductive loops separated by 120°.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
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Circuit Theorems and Conversions
Circuit Theorems in AC Analysis
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Ohm's Law
Parallel Circuits
Passive Filters
Quantities and Units
RC Circuits
RL Circuits
RLC Circuits and Resonance
Series Circuits
Series-Parallel Circuits
Three-Phase Systems in Power Applications
Time Response of Reactive Circuits
Transformers
Voltage, Current and Resistance