Interested to Buy Any Domain ? << Click Here >> for more details...
what is the diffrence between single phase and three phase
- 6 Answers
- 10361 Views
- I also Faced
- E-Mail Answers
Answer Posted / johann
assuming several neglected-to-be-explained-here electrical
theoretical 'things'.......imagine there is a 3
pole "electric motor"....and, if you would turn the
armature (the centre part with the shalf sticking out on
the one end) of a three pole (call them pole "1,2&3")
electric motor fast enough, a voltage is generated at each
of the three terminals on the outside of that motor.
(generator, ok?) Now, the 3 poles are physically 120
degrees seperated from one another. (how? draw a circle,
360degrees, on a paper and devide that circle in 3 equal
parts like a pizza....that's it! that is the position of
every pole, 120degrees apart..) Each pole is responsible
for the generation of a "one"-phase as
the 'circle/armature' rotate round an round. Each phase is
electrically/mechanically/mathematically following the
other with 120degrees or one third of one revolution of the
armature. if you consider the three phases together in an
electrical system you talk about 3-phase system. to over
simplify a little...., at your house, your neighbour's
house and their neigbour's house you find most probably
they say they have all 'single phase power'.....Why? easy.
the three phases that are generated are individually
directed to every house!"1" to your house, "2" to your
neibour's house and "3" to their neibour's house. each
phase considered by it's own is called "single phase".
understand? If you take the output wire from phase "2" and
touch it on phase "1" you will see and hear a big
explosion. Why? because you are electrically doing
something that can be physically compared to taking the
physical pole number '2'..., use terrible force and
squeeeeze it into the physical position of pole number '1'
of your eletrical 'generator'....physically that is
impossible, therefore you get a big explosion
(electrically) because it is impossible to force one
electrical phase ontop of another. your bycicle's tire
can't put the top and the bottom on the road at the same
time UNLESS you use destructive force. myyid_j@yahoo.com
phew! does that make sense? if you do not undertand mail
to above address and will try again... ":)
| Is This Answer Correct ? | 0 Yes | 3 No |
Post New Answer View All Answers
why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)
Define peak time.
The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?
how to wiring it with contactor and timer together
What is mean by hot and cold loop testing? What is the difference between them?
Why did lightening arrestor solid copper rod head is sharp on mobile tower top?
why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator.
how can found motors folt current ? how can disided circuit breakers caoicity and breaking capicity ?
What is the exact minimum vale of voltage between an earth and netural which can damage or can do malfunction of the electronic equipments ? If this is mentioned in any book, pl.give reference.
i want to model paper for section engg.
reason of diode failure in alternator
Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?
To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?
What is the important precuations need tocarried out while working with Electrolite in Battery PM?
Draw the single line diagram of the power station?
