# Search results

1. ### Courses Electrical Engineering: what study path would be better?

Hey guys! So basically I'm still finding hard to decide what my specialization field should be next year. I'm really torn between a major in Electronics with a minor in Power Systems with some programming additional courses OR major in Power Systems with minor in Electronics. My favourite...
2. ### Engineering Parameters of transformers: open and short-circuit tests

1. Homework Statement Ok I have the following circuit and data (when the subscript is "ef" it means "rms" values): I am asked to determine the parameters of the transformer r1 L11, L22 and LM with the given experimental data. 2. Homework Equations 3. The Attempt at a Solution I had...
3. ### Balance of forces: confusion

1. Homework Statement 2. Homework Equations So I basically have to establish the non linear differential equation that governs the movement of this robot (relates d and theta): 3. The Attempt at a Solution So I know that we should have the sum of torques equal to...
4. ### Dot convention inductors in series: equation confusion

1. Homework Statement So I'm really confused with mutual inductors and dot convention. If your answer is going to be a link to any website I can assure you I read them all and that only left me more confused. So here are my questions: 2. Homework Equations 3. The Attempt at a Solution ->...
5. ### Confusion about the direction of the vectors: motional EMF

1. Homework Statement I'm working through an example with motional EMF and I'm having trouble understanding the directions of vectors so that I can apply induction law. The magnetic circuit seems complex because the circuit is used to analyze other situations but the air gap 3, the coil 3 and...
6. ### Mutual inductance coefficient with so little info

1. Homework Statement I have the following circuit: The two inductors are connected in series are characterized by internal resistances R1 and R2 and self-inductances L11 and L22. The magnetic coupling factor between the inductors is k = 0.75. The inductors carry the same current i. What...
7. ### Two voltmeters in parallel measure these different voltages

1. Homework Statement I'm currently studying induction law and circuits with inductors. I came however with the following circuit: [1]: https://i.stack.imgur.com/ghaiE.png 2. Homework Equations 3. The Attempt at a Solution Now my text says the following: "Unlike what your intuition...
8. ### Modeling a third order system

1. Homework Statement Determine the parameters of the PI controller such that two of the closed-loop poles of the transfer function Gclr(s) correspond to the poles of a second order LTI system with the following specifications: i) overshoot S% = 25%; and ii) settling time ts(5%) = 120 s. 2...
9. ### Transmission line: leakage current differential equation

1. Homework Statement I have a coaxial cable with internal conductor of radius r1 and external conductor of radii r2 and r3. The material of the conductors has a conductivity $\sigma_1$. Between the conductors there is a imperfect dielectric of conductivity $\sigma_2$. Consider the...
10. ### System of multiple conductors: image method

1. Homework Statement The following figure represent the traversal cut of a system with two cylindrical equal conductors of radius r0 length l at a distance d from one another and at the same distance h of a plane conductor (conductor zero). The dielectric that surrounds the conductors is the...
11. ### Partial capacitances of a system of conductors

1. Homework Statement I have a small question about the following problem. The figure represents the cross-section of a three-conductor system comprising a communications coaxial cable of length l running parallel to a conducting wall (reference conductor). Determine the partial capacitance...

30. ### Spherical conductor shell problem

1. Homework Statement Consider a spherical conducting shell with inner radius R2 and outer radius R3, that has other spherical conductor inside it with radius R1 (this one is solid). Initially the 2 spheres are connected by a wire. We put a positive charge Q on the sphere and after some time we...