EEE :: RL Circuits
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A 140
resistor is in parallel with an inductor having 60 inductive reactance. Both components are across a 12 V ac source. The magnitude of the total impedance is -
When the frequency of the voltage applied to a series RL circuit is decreased, the impedance
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In a parallel RL circuit, there are 3 A rms in the resistive branch and 3 A rms in the inductive branch. The total rms current is
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A 47
resistor is in series with an inductive reactance of 120 across an ac source. The impedance, expressed in polar form, is -
When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle
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Which of the following power factors results in less energy loss in an RL circuit?
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A 3.3 k
resistor and a 120 mH coil are in parallel. Both components are across a 2 kHz, 12 V ac source. The total current in the circuit is -
When the frequency of the voltage applied to a series RL circuit is increased, the phase angle
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If a load is purely inductive and the reactive power is 12 VAR, the apparent power is
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If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit
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A