Exercise: Rc Circuits

Questions for: Rc Circuits

If a series RC circuit contains a 120 komega.gif resistance and a 160 komega.gif capacitive reactance, the impedance equals _____.
A:
280 komega.gif
B:
120 komega.gif
C:
160 komega.gif
D:
200 komega.gif
Answer: D
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______________ is shuttled back and forth between the source and load.
A:
True power
B:
Reactive power
C:
Apparent power
D:
Impedance power
Answer: B
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When the resistance is greater than the capacitive reactance in a series RC circuit, the phase angle is ___.
A:
0°
B:
between 0° and 45°
C:
between 45° and 90°
D:
45°
Answer: B
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The magnitude of the impedance in the given circuit equals _____.

A:
17.14 omega.gif
B:
24 omega.gif
C:
70 omega.gif
D:
More information is needed in order to find the impedance.
Answer: B
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The hypotenuse of the right triangle of a vector diagram for R and XC is _______________.
A:
impedance
B:
current
C:
voltage
D:
power
Answer: A
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