A parallel circuit has a resistance of 280 Ω and an inductive reactance of 360 Ω. What is this circuit’s impedance?

The circuit is supplied with 24 VAC at 2000 Hz. What is the inductive reactance of the inductor? A. 386.2 Ω B. 226.4 Ω C. 125.6 Ω D. 442.6 Ω 12. What is the inductive reactance of a 2 H inductor in a 60 Hz, AC circuit? A. 0.08 Ω B. 948 Ω C. 753.60 Ω D. 120 Ω 13. What is the inductive reactance of a 0.5 H inductor at a frequency of 1.985 kHz? A. 5024 Ω B. 2234 Ω C. 800 Ω D. 6228 Ω 14. Which of the following denotes impedance? A. H B. Z C. XL D. R 15. What is the parallel impedance of the circuit shown in the figure? A. 64.9 Ω B. 38.3 Ω C. 100 Ω D. 32.65 Ω 16. What is the total current (IT ) of the circuit shown in the figure? A. 1.71 A B. 1.31 A C. 1.50 A D. 0.88 A 17. A 6 mH, a 2 mH, and a 10 mH inductor are placed in series with a 1000 Ω resistor in a circuit. The circuit has a source voltage of 60 VAC at 1000 Hz. What is the total inductive reactance of this circuit? A. 93.80 Ω B. 86.42 Ω C. 113.04 Ω D. 121.64 Ω 18. What is the inductive reactance of a 2 mH inductor at a frequency of 1000 Hz? A. 20.25 Ω B. 12.56 Ω C. 68.3 Ω D. 204.4 Ω 19. A series circuit contains a 30 mH inductor and a 200 Ω resistor. What is the total circuit current (rounded) if the applied voltage is 60 V and the frequency is 1000 Hz? A. 0.22 A B. 0.84 A C. 1.24 A D. 0.44 A 20. What is the inductive reactance of a 0.5 H inductor connected with a 1000 Ω resistor in an AC circuit supplied with 48 VAC at 100 Hz? A. 150.72 Ω B. 314 Ω C. 0.31 Ω D. 500 Ω 21. A parallel circuit has a resistance of 280 Ω and an inductive reactance of 360 Ω. What is this circuit’s impedance? A. 221.02 Ω B. 540 Ω C. 368 Ω D. 191.80 Ω 22. What is the time constant of a 2 mH inductor placed in series with a 400 Ω resistor? A. 0.8 s B. 5 μs C. 0.6 s D. 5 ms 23. What is the inductive reactance of the circuit shown in the figure? A. 41.45 Ω B. 34.54 Ω C. 6.91 Ω D. 41,448 Ω 24. If an 80 mH inductor is in series with a 220 Ω resistor in a circuit with a source frequency of 1000 Hz, what will be the phase angle (rounded) of the current with respect to the voltage? A. 66° B. 70° C. 48° D. 50° End of exam 25. What is the current through the inductor shown in the figure? A. 1.45 A B. 1.21 A C. 0.450 A D. 450.50 A

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