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RC Circuits
In a series RC circuit, when the frequency and the resistance are halved, the impedance
cannot be determined without values
doubles
is halved
is reduced to one-fourth
cannot be determined without values
doubles
is halved
is reduced to one-fourth
Answer
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Related Question
RC Circuits
The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency
must be decreased
is held constant
must be increased
has no effect
must be decreased
is held constant
must be increased
has no effect
Answer
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RC Circuits
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
25 W
195.2 W
19.52 W
275 W
25 W
195.2 W
19.52 W
275 W
Answer
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RC Circuits
A 470 resistor and a 0.2 F capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
318.3
3.14 mS + j2.12 mS
212
2.12 mS + j3.14 mS
318.3
3.14 mS + j2.12 mS
212
2.12 mS + j3.14 mS
Answer
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RC Circuits
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
increases
decreases to zero
decreases
does not change
increases
decreases to zero
decreases
does not change
Answer
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RC Circuits
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
remains the same
decreases
becomes erratic
increases
remains the same
decreases
becomes erratic
increases
Answer
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