Rl Circuits - Study Mode

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[#26] Total current in an RL circuit always lags the source voltage.

(A) True

(B) False

Correct Answer

(A) True

[#27] When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle

(A) Increases

(B) Decreases

(C) Is not affected

(D) Cannot be determined

Correct Answer

(A) Increases

[#28] The phase angle (θ) of a series RL circuit varies directly with frequency.

(A) True

(B) False

Correct Answer

(A) True

[#29] A 140 Ω resistor is in parallel with an inductor having 60 Ω inductive reactance. Both components are across a 12 V ac source. The magnitude of the total impedance is

(A) 5.51 Ω

(B) 55.15 Ω

(C) 90 Ω

(D) 200 Ω

Correct Answer

(B) 55.15 Ω