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 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 angle 0° mA, what is the source voltage expressed in polar form?
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A 47Ω resistor and a capacitor with a capacitive reactance of 120 are in series across an ac source. What is the circuit impedance, Z?
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In the complex plane, the number 14 – j5 is located in the
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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
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A 47Ω resistor and a capacitor with 150Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, 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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A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
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The complex number 6 + j6 is equivalent to
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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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