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All Categories > Science & Mathematics > Engineering

Engineering

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  • Why is it that lightbulbs have to be replaced, but the light sources in televisions and laptop screens never need replacing?

    9 answers · 1 day ago
  • How does three-phase electricity work?

    Best answer: 3 phase power voltage is 380V in Poland and sure it is much danger than 220V. But I guess the washer is still using single phase 220V power because 3 phase power source can be used either 380V or 220V as required. Do not worry about the warning from your manager provided you unplug or turn off the power source to... show more
    Best answer: 3 phase power voltage is 380V in Poland and sure it is much danger than 220V. But I guess the washer is still using single phase 220V power because 3 phase power source can be used either 380V or 220V as required. Do not worry about the warning from your manager provided you unplug or turn off the power source to washer before doing any inside cleaning to it.
    5 answers · 3 days ago
  • Normally, the coil resistance of a coil is:?

    a) Dependent on the current b) Dependent on the voltage c) Dependent on the power d) None of the above
    a) Dependent on the current b) Dependent on the voltage c) Dependent on the power d) None of the above
    7 answers · 2 days ago
  • Given that P=IV, where P is the power, I is the current and V is the voltage, derive an expression for the power in terms of V and R only?

    5 answers · 1 day ago
  • What is the difference between 8031 and 8051 microcontrollers?

    4 answers · 14 hours ago
  • Is there a software program which can be used for simulating solar balloons which harvest the sun's energy?

    I'm trying to find something where I can build a solar balloon which will be 6 km above the ground, add the necessary components, and run a simulation on the amount of energy that can be harvested and used on the ground.
    I'm trying to find something where I can build a solar balloon which will be 6 km above the ground, add the necessary components, and run a simulation on the amount of energy that can be harvested and used on the ground.
    6 answers · 3 days ago
  • If I splice into wires and some of the wire strands come out will that affect connection for footwell lights?

    5 answers · 3 days ago
  • Is Engineering Saturated in the UK?

    4 answers · 2 days ago
  • Why hasn’t anyone designed a humanoid robot yet?

    Best answer: So far. simple female humanoid robot has been made in Japan and China, only able to speak ,dance and showing emotion on face those simple acting.
    Best answer: So far. simple female humanoid robot has been made in Japan and China, only able to speak ,dance and showing emotion on face those simple acting.
    7 answers · 5 days ago
  • I'm doing Single Stage Transistor Amplifier experiment. What is the Equipment tht hv a direct effect on the accuracy of the data?

    list of equipment and components used: DC Power Supply Project Board Multimeter Oscilloscope Function Generator Resistors Capacitors NPN Transistor Connecting lead
    list of equipment and components used: DC Power Supply Project Board Multimeter Oscilloscope Function Generator Resistors Capacitors NPN Transistor Connecting lead
    6 answers · 5 days ago
  • Will civil engineers be essential in a 100 years?

    4 answers · 3 days ago
  • Im pursuing BE mechanical engineering after completing graduation if it s possible studying fashion designing?

    5 answers · 5 days ago
  • How to fix this solar panel?

    How to fix this solar panel?

    I am very new to electronics, electronics is only my hobby. + contact broke off (see picture) when I was soldering a wire to it. Now multimeter reads 0V. I tried to make another contact but the solder wants to stay on the top of the iron and won´t stay in place of the + contact. What can I do?
    I am very new to electronics, electronics is only my hobby. + contact broke off (see picture) when I was soldering a wire to it. Now multimeter reads 0V. I tried to make another contact but the solder wants to stay on the top of the iron and won´t stay in place of the + contact. What can I do?
    7 answers · 7 days ago
  • What would you like to know or what do you know about FUTURE ROBOTICS?

    5 answers · 5 days ago
  • What the similarities between pillar and radial drilling machines?

    4 answers · 5 days ago
  • Can I put half of my protein shake into the car engine coolant,as it's almost empty and I only have my protein shake left?

    Best answer: I wouldn't advise it unless you want to destroy your car. Just use a bottle of water. It's only like $2 at most. Much cheaper than replacing the entire engine.
    Best answer: I wouldn't advise it unless you want to destroy your car. Just use a bottle of water. It's only like $2 at most. Much cheaper than replacing the entire engine.
    7 answers · 1 week ago
  • Should I become a welder?

    So I’m currently in welding II in highschool which is basically advancing welding. And I’m thinking of taking four years of it. I find it kind of rewarding finishing welds and I don’t mind getting dirty. But should I?
    So I’m currently in welding II in highschool which is basically advancing welding. And I’m thinking of taking four years of it. I find it kind of rewarding finishing welds and I don’t mind getting dirty. But should I?
    9 answers · 1 week ago
  • Why is Ie = Ic + Ib but IR2 is not = IR1 + Ib?

    Why is Ie = Ic + Ib but IR2 is not = IR1 + Ib?

    Best answer: During transistor dc conduction Ie splits unequally at the emitter-base junction with the majority of emitter's current going to collector and then it's what's left of Ie that makes up the transistor's total dc base current Thus Ie must = Ic + Ib. IR1(dc) consist of the dc current through R2... show more
    Best answer: During transistor dc conduction Ie splits unequally at the emitter-base junction with the majority of emitter's current going to collector and then it's what's left of Ie that makes up the transistor's total dc base current Thus Ie must = Ic + Ib.

    IR1(dc) consist of the dc current through R2 joined by the transistor's dc base current at the R2-base junction,
    Thus IR1 dc must = (IR2 + IB)dc
    Consequently;
    IR2 dc = (IR1 - Ib)dc
    4 answers · 1 week ago
  • Flying cars are never going to happen are they?

    Best answer: No, you are right. Any 'flying cars' that are built are purely experimental. Some may be used, but would need to be regulated by aviation standards. Of course, once driven onto public roads, they would then be subject to roadworthy standards. There is no way they would be allowed to land or take off on... show more
    Best answer: No, you are right. Any 'flying cars' that are built are purely experimental. Some may be used, but would need to be regulated by aviation standards. Of course, once driven onto public roads, they would then be subject to roadworthy standards. There is no way they would be allowed to land or take off on public roads, either.
    Then there are practical things like maintenance, if your car stops on a road you pull over and call for road service. If your flying car stops, you can't pull it up to the nearest cloud. It would need to descend to ground. In a crowded city?
    Also practically, aren't cars dangerous enough only moving along made road surfaces in 2 dimensions, without adding a 3rd. dimension like height? Can you imagine the carnage with crowded skies! No- one would be safe even within their homes from crashing flying cars.
    Never. Cannot happen.
    13 answers · 2 weeks ago
  • How can I pump low pressure muncipal tap water from ground level water tank to terrace of 11 feet?

    10 answers · 2 weeks ago

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