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Electrical Engineering
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Capacitors
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Question
A capacitor of 0.02 µF is larger than
Options
A. 0.000020 F
B. 200,000 pF
C. 2,000 pF
D. all of the above
Correct Answer
2,000 pF
More questions
1. The induced voltage across a stationary conductor in a stationary magnetic field is
Options
A. zero
B. reversed in polarity
C. increased
D. decreased
Show Answer
Scratch Pad
Discuss
Correct Answer: zero
2. What is the current through
R
2
?
Options
A. 3.19 A
B. 319 mA
C. 1.73 A
D. 173 mA
Show Answer
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Discuss
Correct Answer: 173 mA
3. When the voltage across a capacitor is tripled, the stored charge
Options
A. triples
B. is cut to one-third
C. stays the same
D. doubles
Show Answer
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Discuss
Correct Answer: triples
4. Referring to the given circuit, determine
Z
TH
as seen by
R
L
.
Options
A. 1444∠?48.5° Ω
B. 4176 ∠?73.3° Ω
C. 956 ∠?48.5° Ω
D. 1444 ∠?73.3° Ω
Show Answer
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Correct Answer: 1444∠?48.5° Ω
5. The Thevenin equivalent voltage is
Options
A. equal to the source voltage
B. the same as the load voltage
C. the open circuit voltage
D. none of the above
Show Answer
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Discuss
Correct Answer: the open circuit voltage
6. Polyphase generators produce simultaneous multiple sinusoidal voltages that are separated by
Options
A. certain constant phase angles
B. certain constant frequencies
C. certain constant voltages
D. certain constant currents
Show Answer
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Correct Answer: certain constant phase angles
7. 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.
Options
A. True
B. False
Show Answer
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Correct Answer: False
8. If one of the resistors in a parallel circuit is removed, the total resistance
Options
A. decreases
B. increases
C. remains the same
D. doubles
Show Answer
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Discuss
Correct Answer: increases
9. A 320 µH coil is in series with a 3.3 kΩ resistor. How long does it take for current to build up to its full value?
Options
A. 0.48 s
B. 0.48 ms
C. 0.48 µs
D. 48 s
Show Answer
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Discuss
Correct Answer: 0.48 µs
10. The number 4.4 × 10
6
ohms expressed using a metric prefix is
Options
A. 4 k
B. 4.4 k
C. 4 M
D. 4.4 M
Show Answer
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Discuss
Correct Answer: 4.4 M
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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
