EXAMIANS
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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When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
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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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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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What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
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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 the complex plane, the number 14 – j5 is located in the
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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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Point +4 on the complex plane is
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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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