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    DC brushless motor vs. AC motor

    I noticed that common technology such as brushless DC motors use AC to drive them. What exactly makes DC brushless motors different from AC motors if they both ultimately take in AC? Why even refer to DC brushless motors as DC motors if they're not even driven by DC? I understand the source is a...
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    Does a physics background combine better with ME or EE industry jobs?

    As the title asks, does a physics background combine better with EE or ME for industry jobs in America? Which engineering field would have more jobs for someone like that? I'm talking in the context of someone double majoring in physics and ME/EE or doing an engineering physics degree.
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    Programs Questions about Engineering Physics Degree

    With an engineering physics degree, which concentration would bring more job opportunities? Mechanical or electrical engineering? In terms of electrical engineering, I know an EP degree is good for going into nanoelectronics/photonics. Any other areas? Anything in power engineering...
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    Instant Torque (Electric Cars vs. Gas/Diesel Cars)

    So I hear a lot about how electric cars are great because electric motors get instant max torque at 0 RPM. However, can't the same be done with an internal combustion engine if you have a clutch?
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    Analysis and Design of Mechanisms

    Hello all, I'm an electrical engineering student searching for some advice regarding a mechanical engineering class. I have to take at least one upper level engineering class that's not electrical for my degree and I would prefer to take an ME class to fulfill that requirement. While browsing my...
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    Question about acceleration regarding Diesel vs. Gas

    I've read on many sites that diesel cars usually accelerate slower than gas cars. Why is that though? Diesel engines reach higher torque and at lower RPMs so why is it that gas cars accelerate faster? Are diesel cars just a lot heavier or something?
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    EE Course: Signals and Systems

    Hi all, I'm in a bit of a dilemma. I have an opportunity to take Signals and Systems over the summer. However, I have not taken Differential Equations yet. A course on Electric Circuits is a prerequisite for this class and I ended up taking that last semester without any DE knowledge LOL...
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    Carbon footprint of Chevy Volt

    Hi all, I've heard people try to estimate the carbon footprint from the production of cars based on the cost of production. Can such an estimate be accurate at all?
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    Help an EE student get into mechanical design

    Hi, I'd like to learn some mechanical design. My knowledge in mechanics is mainly from general physics and a basic course in engineering mechanics. Is this enough to take on intermediate level mechanical design? Should I take a few ME classes? If so, what would you recommend? What is a good free...
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    Going into Medical Imaging (EE vs. BME)

    So I'm an EE undergrad student and the design of medical imaging devices is one area I'm interested in. I often hear that's more appropriate for a BME major. However, designing medial imaging devices undoubtedly involves a lot of knowledge in electronics design, signal processing...
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    Efficiency of power inverters in electric/hybrid vehicles

    I am interested in increasing the range of electric/hybrid vehicles. Increasing the energy density of batteries is something chemists, materials scientists, and chemical engineers worry about. What about from the electrical side though? Can electrical engineers do much to significantly...
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    Mechanical or Electrical Problem?

    Last summer, I was taking apart a fan because it wasn't working. It turned as I expected that it was a burned out motor. Now one of my co-workers was a little upset at me because I had called it an electrical problem or failure. He said a burned out motor is a mechanical failure. Was he...
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    Power-to-weight ratio of electric motors

    I wasn't sure whether to put this in the mechanical engineering board or not but since electrical engineers typically design electric motors, I'll put it here. From what I hear, all types of electric motors have terrible power-to-weight ratios. So if we were to hypothetically one day have a...
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    Electric Superchargers?

    Does anyone here have any experience with electric superchargers? From the limited information I've read on the Internet, it seems energy storage is the biggest issue with them. For one, the average automotive vehicle tends to have a battery with too low of a voltage. Also, the motors that...
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    Energy Density of Batteries

    Hi all. I was wondering, are lithium-ion batteries the best type of batteries for electric vehicles? I also remember watching a video of Elon Musk (from Tesla Motors and SpaceX) claiming that lithium-ion batteries are increasing their energy density by 8 to 9 percent every year. I googled...
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    What can be done to make electric motors louder?

    I like pure electric cars but one thing that sometimes annoys me is how quiet they are. Many car enthusiasts will never buy electric cars solely because they don't sound as "cool" as a roaring internal combustion engine. Also, it is dangerous for cars to be so quiet. Many pedestrians and drivers...
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    Electric Motor Design?

    I've been looking at the undergrad catalog of my school and I haven't noticed any classes that teach motor design. I found classes on drives and motor control but nothing on the actual design of motors/generators. I always thought electric machines was a fundamental topic that all EE curriculums...
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    Electronics using heat rather than charge for carrying information ?

    Electronics using heat rather than charge for carrying information!!? http://www.scientificamerican.com/article.cfm?id=magnetism-confirmed-to-control-the-flow-of-heat So the article states it's been confirmed that magnetism controls heat. It also mentions that future electronics could use...
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    Linear Algebra vs. Probability Modeling

    Hi all, I was wondering which of these two courses is more difficult? I understand the standard caveat that it depends on the institution and the professor but I'm just wondering, in terms of sheer difficulty of the concepts taught in these two courses, is there a general consensus?
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    Will electric motors ever propel a 747?

    I've been told that a 747 will never be able to be propelled by electric motors even with room temperature superconductivity because batteries have too low of energy density. So if hypothetically we were able to develop a battery with energy density as high as jet fuel, would electric motors...
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    Is a fuel cell technically an energy storage device?

    I've heard fuel cells being called energy storage devices. However, unlike batteries, they only convert energy. They don't store anything unless you consider the brief moment of converting chemical energy to electrical energy storage time? Are there fuel cell types that store let's say hydrogen...
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    Engineering Antimatter Engines and Electrical Engineering?

    Are there opportunities for EEs to be involved in research on antimatter engines? Considering antimatter engines are heavily based on magnetic principles, is it feasible to assume that antimatter engine design will be a subfield of EE? The gap between EE and theoretical physics is getting smaller.
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    EE Senior Design Projects

    Hi all, I'm curious about what you guys did for a senior year project. Even though I'm still far from graduating, I'm already thinking about senior design. Anyone have any ideas for an EE project that involves mechanical engineering as well? Maybe that wouldn't be feasible since as an EE...
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    Good book for calculus-based general physics?

    I had two semesters of algebra-based general physics. Right now, I'm taking a "conversion" class which pretty much goes over everything I did in those past two classes but it also adds calculus methods. There is no textbook for the course so I'm relying solely on the instructor's notes and...
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    Application of superconductive motors to electric cars

    At the moment, I believe the fastest electric car is made by Shelby Super Cars and it can go at a top speed of 208 mph. Are there any estimates around predicting how fast electric cars will be once companies start using superconductive motors?
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    Programs EE Majors: Should I take Electric Circuits or Digital Logic?

    I'll be taking a heavy workload of classes next semester. This will be the first time I'll be taking all technical classes. To ease my transition, should I take electric circuits or digital logic? What is the general consensus in terms of which one of these classes is more difficult?
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    Engineering Employers' thoughts on B.S. in Physics/M.S. in Electrical Engineering?

    What do employers generally think of someone with a B.S. in Applied Physics and an M.S. in Electrical Engineering? Do employers see it as a negative that the person didn't get his/her B.S. also in EE?
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    Physics For those of you who found a job with just a B.Sc in physics

    I'm just curious, but what exactly are you doing?
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    Physics What specific field in physics is the most popular for industry jobs?

    Is condensed matter physics the most useful field in physics to study for someone who wants to work in industry (with a B.Sc or M.Sc)? I am talking about in the USA for the record.
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    Engineering Can you get an engineering job with an Applied Physics degree?

    How likely is it for someone with a Bachelor's in Applied Physics to land a job as an electrical or mechanical engineer?
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