New answers tagged

1

It doesn't look particularly effective. 1: soft iron has eddy current losses, use laminated silicon steel instead. 2: the pole pieces and magnets are not well shaped, commercial generators use poles and magnets that are shaped to fill space better so that they can be more compact. Ultimately how well it works depends on how well you build it.


1

If I'm reading your drawings right, this is just a permanent-magnet AC generator, with a particularly inefficient layout of magnets and windings. So, yes, but you've not really invented anything new, sorry to say.


3

If we're just talking about a piece of metal like wire, conductors aren't specific to DC or AC. Nothing is really DC, since for something to be truly DC it would have to have existed since the beginning of time at a constant level and continue to exist to the end of time at that same constant level. The fact it has to start and stop means it has to change ...


0

The power and the power factor are both determined by the load characteristics and the response of the load to changing frequency and voltage. The engine speed controls the generator's output voltage and frequency. The engine determines the maximum power. If the generator delivers too much electrical power to the load, it will require more torque than the ...


1

Electrostatic machines that are the duals of electromagnetic machines have been constructed. They use electric fields rather than magnetic fields. Look at my answer to this question


1

Magnetic - Generator Chemical - battery. Pressure - Piezoelectric cell. Light - Photoelectric cell. Heat - Thermocouple. Friction - Static Electricity. Only the first two are sources of electricity. Next 3 produce a voltage, but not enough to power anything real, mainly sensors. And the last is nature.


3

The Van der Graaff generator is one example. Image source: Wikimedia. hollow metallic sphere (with positive charges) electrode connected to the sphere, a brush ensures contact between the electrode and the belt upper roller (Plexiglass) side of the belt with positive charges opposite side of the belt with negative charges lower roller (metal) lower ...


3

The reactive loads connected to the service will cause a phase shift of the current in each phase with respect to that phase's voltage. The phase relationship between voltages of the three phases will not change.


Top 50 recent answers are included