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Electrical Engineering
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RL Circuits
See What Others Are Saying!
Question
Referring to Problem 23, the reactive power is
Options
A. 10 mVAR
B. 100 mVAR
C. 6.76 mVAR
D. 148 mVAR
Correct Answer
100 mVAR
More questions
1. In an
RC
low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
2. A reflective load is a load as it appears to the source in the primary of a transformer.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
3. A transformer changes ac to dc.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
4.
Series aiding
is a term sometimes used to describe voltage sources of the same polarity in series.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
5. The number 4,500,000 can be expressed as
Options
A. 4,500 × 10
6
B. 4.5 × 10
6
C. 4.5 × 10
-3
D. either 4,500 × 10
4
or 4.5 × 10
6
Show Answer
Scratch Pad
Discuss
Correct Answer: 4.5 × 10
6
6. Two 1.5 V cells are connected series opposing across two 100 Ω resistors in series. Total current flow is
Options
A. 15 mA
B. 5 mA
C. 2 mA
D. 0 A
Show Answer
Scratch Pad
Discuss
Correct Answer: 0 A
7. The branch current method uses
Options
A. Kirchhoff's voltage and current laws
B. Thevenin's theorem and Ohm's law
C. Kirchhoff's current law and Ohm's law
D. the superposition theorem and Thevenin's theorem
Show Answer
Scratch Pad
Discuss
Correct Answer: Kirchhoff's voltage and current laws
8. Some circuits require more than one voltage or current source.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
9. An ohmmeter is an instrument for measuring
Options
A. current
B. voltage
C. resistance
D. wattage
Show Answer
Scratch Pad
Discuss
Correct Answer: resistance
10. In a three-phase system, the voltages are separated by
Options
A. 45°
B. 90°
C. 120°
D. 180°
Show Answer
Scratch Pad
Discuss
Correct Answer: 120°
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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