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Electrical Engineering · all questions

RL Circuits
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To increase the current in a series RL circuit, the frequency

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When the frequency is decreased, the impedance of a parallel RL circuit Increases

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The resistor voltage in an RL circuit is always out of phase with the current.

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When the frequency of the voltage applied to a series RL circuit is increased, the phase angle

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The impedance of an RL circuit varies inversely with frequency.

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Which of the following power factors results in less energy loss in an RL circuit?

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A 470 Ω resistor and a 200 mH coil are in parallel. Both components are across a 1.5 kHz ac source. The total admittance of the circuit, in polar form, is

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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 power factor of 1 indicates a purely reactive circuit, and a power factor of 0 indicates a purely resistive circuit.

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