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.

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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