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Subel. D
A
48 questions
B
60 questions
C
60 questions
D
24 questions
E
48 questions
F
60 questions
G
36 questions
H
18 questions
I
18 questions
J
30 questions
K
36 questions
L
48 questions
M
18 questions
N
30 questions
O
30 questions
P
24 questions
Q
12 questions
6 questions
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Subelement D
Circuits
Section 29
R-L-C Circuits
3
29D1
What is the approximate magnitude of the impedance of a parallel R-L-C circuit at resonance?
Correct Answer
A.
Approximately equal to the circuit resistance.
B.
Approximately equal to XL.
C.
Low, as compared to the circuit resistance.
D.
Approximately equal to XC.
3
29D1
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3
29D2
What is the approximate magnitude of the impedance of a series R-L-C circuit at resonance?
A.
High, as compared to the circuit resistance.
Correct Answer
B.
Approximately equal to the circuit resistance.
C.
Approximately equal to XL.
D.
Approximately equal to XC.
3
29D2
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3
29D3
How could voltage be greater across reactances in series than the applied voltage?
A.
Resistance.
B.
Conductance.
C.
Capacitance.
Correct Answer
D.
Resonance
.
3
29D3
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3
29D4
What is the characteristic of the current flow in a series R-L-C circuit at resonance?
Correct Answer
A.
Maximum
.
B.
Minimum.
C.
DC.
D.
Zero.
3
29D4
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3
29D5
What is the characteristic of the current flow within the parallel elements in a parallel R-L-C circuit at resonance?
A.
Minimum.
Correct Answer
B.
Maximum
.
C.
DC.
D.
Zero.
3
29D5
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3
29D6
What is the relationship between current through a resonant circuit and the voltage across the circuit?
A.
The current and voltage are 180 degrees out of phase.
B.
The current leads the voltage by 90 degrees.
Correct Answer
C.
The voltage and current are in phase.
D.
The voltage leads the current by 90 degrees.
3
29D6
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