RL Circuits MCQ Questions and Answers

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RL Circuits MCQ Questions and Answers: We provide lots of multiple choice questions and answers related to RL Circuits. here you can learn mcqs  questions for electrical engineering.

1) If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit

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

3) 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

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

5) 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

6) A 1.2 kΩ resistor is in series with a 15 mH coil across a 10 kHz ac source. The magnitude of the total impedance is

7) When the frequency of the voltage applied to a series RL circuit is decreased, the impedance

8) A 12 kΩ resistor is in series with a 90 mH coil across an 8 kHz ac source. Current flow in the circuit, expressed in polar form, is I = 0.3 ∠0° mA. The source voltage, expressed in polar form, is

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

10) If a load is purely inductive and the reactive power is 12 VAR, the apparent power is