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Electrical Engineering
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RC Circuits
See What Others Are Saying!
Question
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
Correct Answer
141 mA
More questions
1. In a Y-connected circuit, between each line voltage and the nearest phase voltage, there is a phase angle of
Options
A. 0°
B. 30°
C. 60°
D. 120°
Show Answer
Scratch Pad
Discuss
Correct Answer: 30°
2. The quality factor (
Q
) is the ratio of true power to apparent power.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
3. In an
RC
integrating circuit, the output voltage is taken across the capacitor.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
4. A resistance of 3.3 MΩ is connected across a 500 V source. The resulting current is approximately
Options
A. 15.1 µA
B. 151 µA
C. 66 mA
D. 660 mA
Show Answer
Scratch Pad
Discuss
Correct Answer: 151 µA
5. The number of megohms in 0.03 kilohms is
Options
A. 0.00002 MΩ
B. 0.0002 MΩ
C. 3 × 10
?5
MΩ
D. either 0.00002 MΩ or 0.0002 MΩ
Show Answer
Scratch Pad
Discuss
Correct Answer: 3 × 10
?5
MΩ
6. The internal resistance of a 30,000 ohm/volt voltmeter set on its 50 V range is
Options
A. 15,000 Ω
B. 150,000 Ω
C. 1,500,000 Ω
D. 15,000,000 Ω
Show Answer
Scratch Pad
Discuss
Correct Answer: 1,500,000 Ω
7. An inductor, a 1 kΩ resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is
Options
A. 0 V
B. 6 V
C. 12 V
D. 4 V
Show Answer
Scratch Pad
Discuss
Correct Answer: 6 V
8. A 1.2 kΩ resistor is in series with a 15 mH coil across a 10 kHz ac source. The magnitude of the total impedance is
Options
A. 152.6 Ω
B. 1,526 Ω
C. 1,200 Ω
D. 942 Ω
Show Answer
Scratch Pad
Discuss
Correct Answer: 1,526 Ω
9. For 12 V and 40 mA, the power is
Options
A. 480 mW
B. 0.480 W
C. 480,000 µW
D. all of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: all of the above
10. Determine
V
TH
when
R
1
is 180 Ω and
X
L
is 90 Ω.
Options
A. 135∠63.4° V
B. 13.5∠63.4° V
C. 12.2∠0° V
D. 122∠0° V
Show Answer
Scratch Pad
Discuss
Correct Answer: 13.5∠63.4° V
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More in Electrical Engineering:
Alternating Current and Voltage
Branch, Loop and Node Analyses
Capacitors
Circuit Theorems and Conversions
Circuit Theorems in AC Analysis
Energy and Power
Inductors
Magnetism and Electromagnetism
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