EXAMIANS
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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A positive angle of 30° is equivalent to a negative angle of
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In the complex plane, the number 4 + j3 is located in the
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A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
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In a series RC circuit, when the frequency and the resistance are halved, the impedance
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In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
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In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
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An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
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A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
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The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency
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