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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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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When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
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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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In the complex plane, the number 14 – j5 is located in the
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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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What is the angular difference between +j4 and –j4?
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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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When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
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A positive angle of 30° is equivalent to a negative angle of
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