EXAMIANS
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 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 the complex plane, the number 14 – j5 is located in the
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Point +4 on the complex plane is
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The complex number 6 + j6 is equivalent to
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A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 k. Current flow in the circuit is
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A positive angle of 30° is equivalent to a negative angle of
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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 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 4 + j3 is located in the
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