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RL Circuits
RL Circuits
If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit
doubles
cannot be determined without values
halves
remains constant
doubles
cannot be determined without values
halves
remains constant
Answer
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RL Circuits
If a load is purely inductive and the reactive power is 12 VAR, the apparent power is
12 VA
24 VA
0 VA
6 VA
12 VA
24 VA
0 VA
6 VA
Answer
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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
cannot be determined without values
decreases
increases
does not change
cannot be determined without values
decreases
increases
Answer
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RL Circuits
A 3.3 kΩ 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
874 A
8.74 mA
8.74 A
874 mA
874 A
8.74 mA
8.74 A
874 mA
Answer
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RL Circuits
Which of the following power factors results in less energy loss in an RL circuit?
1
0.8
0.2
0.4
1
0.8
0.2
0.4
Answer
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2
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