A positive angle of 30° is equivalent to a negative angle of
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Electrical Engineering · all questionsRC Circuits
RC Circuits
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Apparent power is expressed in watts.
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The complex number 6 + j6 is equivalent to
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When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
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In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
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The capacitor voltage always leads the current by 90°.
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In the complex plane, the number 14 - j5 is located in the Fourth quadrant
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Total current in an RC circuit always leads the source voltage.
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The complex number 40 ∠ 55° is equivalent to
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A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
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In a series RC circuit, when the frequency and the resistance are halved, the impedance
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A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
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What is the angular difference between +j4 and -j4?
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The impedance of a series RC circuit varies directly with frequency.
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When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
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The circuit phase angle is the angle between the total current and the applied (source) voltage.
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A capacitor with 150 ohm of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
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A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
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An imaginary number is one that exists only in the mind of the mathematician.
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For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
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