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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

0.564
564
6.76
55.7

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RL Circuits
The voltages in Problem 5 are measured at a certain frequency. To make the resistor voltage less than the inductor voltage, the frequency is

increased
doubled
not a factor
decreased

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

does not change
increases
cannot be determined without values
decreases

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

decreases
increases
remains constant
is not a factor

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RL Circuits
Referring to Problem 23, the reactive power is

100 mVAR
148 mVAR
6.76 mVAR
10 mVAR

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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

26.0 V
18.4 V
2 V
20 V

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