The engineering discipline concerned with the study, design and application of equipment, devices and systems which use electricity, electronics, and electromagnetism.
Questions tagged [electrical-engineering]
583 questions
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Why doesn't my phone scroll if I put a ring flat on the screen?
If I place a ring on the screen of my phone, and then try to scroll with my finger inside the ring, the ring and my finger move up and down, but the screen doesn't scroll. If I leave the ring on the screen, but put my finger to one side of it, it…
BeginTheBeguine
- 141
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2 answers
Why was I shocked while touching an outlet phase and a cement wall at the same time?
My question is, if I touch the outlet phase wire with one hand and the cement wall with the other hand, will I get shocked?
I knew that I'll be shocked in this case, even happened to me once, but we had the same conversation in class like two days…
Arx Anderson
- 21
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How do I calculate thrust for a high bypass turbofan engine? (7th grade)
so i'm a 7th grader trying to create something using a high bypass turbofan engine but I need to learn how to calculate the thrust for it and i'm unsure on how I am meant to do that. If anyone has any answers for me it would me much appreciated.
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Action at distance with charges (Electromagnetism) - help please!
My professor taught us in a theory lecture on electromagnetism , that if two charges are 1 light year apart and the charge on the left moves towards the charge on the right. The force felt on the right charge will "instantaneously" change however…
HMMAXI
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How does a self-balancing motorcycle BMW Vision Next 100 balance?
BMW unveils new self-balancing electric motorcycle concept.
And this concept can balancing itself.
How the balancing technology works?
user3809000
- 11
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Electron , collision , current , dual nature
My question is regarding fundemantal concept.
I am good in kcl and kvl delta to y resistor rcl and rl circuits machines etc but as i read drift velocity i get so many questions.
We are reading since childhood that electron loose their energy while…
Ahmed Syed
- 67
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Higher dimensional, generalised theoretical digital electronics
I'm learning digital engineering and I'm also a fan of theoretical and abstract physics and mathematics. I find it amazing that you have an algebra that directly corresponds to logic circuits and if you do manipulations on paper you can see the…
JonnyPython
- 219
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1 answer
Stability of an unstable system using nonlinear element, is it possible or not?
Say there is a system with open-loop transfer function $$ G(s)=\frac{1}{(s-1)}$$. The system is definitely unstable.
If I put any nonlinear system in cascade with $G(s)$ and from the output, a negative unity feedback. Is it possible to make the…
Saprativ Saha
- 347
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1 answer
Generators and electric motors
In a diesel generator, instead of using diesel engine can we use an electric engine and connect the motor and generator to the battery?
will this make it an infinitely moving system or will the electricity get reduced due to resistence?
can we…
Scramjet
- 173
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How to connect a computer with something like a little electric car?
I am a complete beginner and I wondered how to hardware like a controller with a f.e. little electric car. So when I want to program a controller like a ps4 controller so that it can let a little electric car drive, how can I do that? (programming…
Thboss
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How can I self-learn Electrical Engineering?
I know it is an awkward question but I love maths, physics, and engineering! Due to my health problems (I am suffering from Psoriasis) I was not able to opt PCM (Physics, Chemistry, and Mathematics) as a stream. But I love it so much that I just…
frostzt
- 101
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Practical Transformer output
I am a junior on Electrical engineering, on one of my experiment, I have yet found any explanation for this:
Is there any possibility that a practical transformer would produce a zero real power on the secondary side, which measured to be -j3.5x10…
Acery
- 15
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2 answers
Grounding secondaries in isolation transformer
In an isolation transformer (I assume a 220v-110v step down transformer is also called an isolation transformer), you can ground either of the secondary leads. I'd like to know the following:
If you ground one lead, and short the other lead to that…
Biney
- 19
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1 answer
Electrical induction limit
How much current can a metal object "hold" using electrical induction? For example a 1 kg ball of iron.
Lets say i start to charge the item negatively.
I suppose its up to the mass and the kind of metal. But how can you induce more and more…
Savroy
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Voltage supply used in main supply
why should we use voltage rms (V rms) besides peak voltage (V peak) for main supply? What is the different that might be occur?
