{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

hw19b - aljabr(faa335 Hw19 Ross(89251 This print-out should...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
aljabr (faa335) – Hw19 – Ross – (89251) 1 This print-out should have 13 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points In the purely inductive circuit in the figure below, the inductance is 10 . 3 mH and the rms voltage is 169 V. E = E max sin ωt E rms = 169 V S 10 . 3 mH Find the inductive reactance if the fre- quency is 8 . 3 Hz. Correct answer: 0 . 53715 Ω. Explanation: Let : f = 8 . 3 Hz , and L = 10 . 3 mH = 0 . 0103 H . The angular frequency is ω = 2 π f , so the inductive reactance at 8 . 3 Hz is X L = ω L = 2 π f L = 2 π (8 . 3 Hz) (0 . 0103 H) = 0 . 53715 Ω . 002 (part 2 of 2) 10.0 points Find the rms current in the circuit. Correct answer: 314 . 624 A. Explanation: Let : V rms = 169 V . The rms current is I rms = V rms X L = 169 V 0 . 53715 Ω = 314 . 624 A . 003 (part 1 of 2) 10.0 points When a particular inductor is connected to a sinusoidal voltage with a 136 V amplitude, a peak current of 7 . 6 A appears in the inductor. What is the maximum current if the fre- quency of the applied voltage is doubled? Correct answer: 3 . 8 A. Explanation: Let : I max = 7 . 6 A . The current in the circuit is I max = V max X L = V max ω L .
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern