Product Condition: No Defects; Kulshreshtha, D C (Author); English (Publication Language); 880 Pages - 07/01/2017 (Publication Date) - McGraw Hill Education (Publisher)
5555555555 18. 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 ________. (a) 152.6 Ω (b) 1,526 Ω (c) 1,200 Ω (d) 942 Ω
5555555555 5. A resistor of 3 kΩ, a 0.05 μF capacitor, and a 120 mH coil are in series across a 5 kHz, 20 V ac source. What is the impedance, expressed in polar form? (a) 636 Ω (b) 3,769 Ω (c) 433 Ω (d) 4,337 Ω
5555555555 1. A 10 Ω resistor, a 90 mH coil, and a 0.015 μF capacitor are in series across an ac source. The impedance magnitude at 1,200 Hz below fr is ________. (a) 1,616 Ω (b) 161 Ω (c) 3,387 Ω (d) 1,771 Ω
5555555555 10. 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 ________. (a) 47 ∠68.6° Ω (b) 120 ∠68.6° Ω (c) 129 ∠31.4° Ω (d) 129 ∠68.6° Ω
5555555555 14. 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