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 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
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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 positive angle of 30° is equivalent to a negative angle of
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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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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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The complex number 40 angle 55° is equivalent to
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A 2 k resistor is in series with a 0.015 F capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
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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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