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RL Circuits

RL Circuits
A 1.5 kΩ resistor and a coil with a 2.2 kΩ inductive reactance are in series across an 18 V ac source. The power factor is

564
55.7
6.76
0.564

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RL Circuits
When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle

is not affected
increases
decreases
cannot be determined

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RL Circuits
If a load is purely inductive and the reactive power is 12 VAR, the apparent power is

24 VA
0 VA
6 VA
12 VA

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RL Circuits
In a series RL circuit, 12 V rms is measured across the resistor, and 14 V rms is measured across the inductor. The peak value of the source voltage is

20 V
18.4 V
2 V
26.0 V

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RL Circuits
A 47Ω resistor is in series with an inductive reactance of 120Ω across an ac source. The impedance, expressed in polar form, is

129 angle 68.6°
47 angle 68.6°
120 angle 68.6°
129 angle 31.4°

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

is not a factor
remains constant
increases
decreases

ANSWER DOWNLOAD EXAMIANS APP
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