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RC Circuits
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
R = 5XC
R < XC
R > XC
R = XC
R = 5XC
R < XC
R > XC
R = XC
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 increased
must be decreased
has no effect
is held constant
must be increased
must be decreased
has no effect
is held constant
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
212
3.14 mS + j2.12 mS
2.12 mS + j3.14 mS
318.3
212
3.14 mS + j2.12 mS
2.12 mS + j3.14 mS
Answer
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RC Circuits
What is the angular difference between +j4 and –j4?
30°
90°
270°
180°
30°
90°
270°
180°
Answer
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RC Circuits
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
0 Hz
12 kHz
6 kHz
18 kHz
0 Hz
12 kHz
6 kHz
18 kHz
Answer
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RC Circuits
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
2.16
3.46
4.24
21.63
2.16
3.46
4.24
21.63
Answer
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