WHY WE CAN GENERATE POWER IN 3PHASE MODE ONLY NOT IN 4 OR
5PHASE
Answers were Sorted based on User's Feedback
Answer / l.veeraragavan
because compared to other phases(4,5..) the three phase
power production is more economic.
Is This Answer Correct ? | 15 Yes | 5 No |
Answer / haroon
becoz there is 360 degree in a circle and we can have dived
it in 3 equal parts i-e 120degree.the meximum power that we
can generate on in three phase system, let draw a sine wave
of three phase supply when R is on its peak the Y is
behined it by 120 and the blue is bhined R bye270 dgin this
wave 2 phase r +ve at the same time which is needed for
motor rotating which can be +ve if we draw sine wave of 5
or 4 phase generator
haroon_et@yahoo.com
Is This Answer Correct ? | 11 Yes | 2 No |
Answer / francis
Hi, sukhvinder
R U AN ELECTRICAL ENGINEER OR A LAYMEN,
DONT PLAY GAMES WITH THE PEOPLE WHO R ASKING ANSWERS TO THE
QUESTION
Is This Answer Correct ? | 11 Yes | 3 No |
Answer / karthik
it is not that we cannot generate 4 phase voltage. if that
is the case the phase difference will 90(360/no of phase).
so the voltage b/w phase 1&3 will be 2*nominal voltage but
between 1&2 it will not be like that. so it is not in use.
Is This Answer Correct ? | 8 Yes | 0 No |
Answer / zaheer ahmad
IT is more economic to use three phase as compared to 4 or
more phases .
Is This Answer Correct ? | 6 Yes | 1 No |
Answer / silu
cost of transmission,losses,number of insulater,tfr size are
increases.
Is This Answer Correct ? | 6 Yes | 4 No |
Answer / eduardo
You are wrong. We can generate power in 4 or 5 phase or more
or even 2 or 1 phase. The reason we generate only 3 phase is
we don´t need 6 wire (1 to go and 1 to back) to carry the
power. We only need 3 wires. This is because if they are 3
and have 120º phase difference, and if the load in all the 3
phases is equal, the sum of the 3 return current is zero. So
we don´t need wires to "carry back" the current. This is
very economic, and are used in all the world.
There are several articles about it in the net. Try search
neutral current.
Is This Answer Correct ? | 3 Yes | 1 No |
Answer / sudhir
for 4 phase system ,phase difference b/w phase 0,90,180,270
deg.at every instant 0deg phase cancil by 180 deg phase,and
90deg phase cancil with 270 deg phase . and two conductor
work as phase and two for return path so it work as two
circuits of two phase supply and there are lot of advantages
of three phase supply over two phase supply.if we need of
two phases then it is simply generated by three phase.
and three phase system is symmetrical(line voltage or
current in magnitude between any two phases is equal to
other two phases in balance condition ) but 5 phase circuit
is not symmetrical.so calculation and operation is difficult.
as we increases the phases the fluctuation of torque in case
of polyphase induction motor is reduses.so 6-phase motor is
bater then 5-phases motor and 6 phase supply
simply can obtains by 3 phase supply so why we generate 5 phase
supply.
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / umesh
Hi
we are generating three phase supply system because three
phase system is a balanced type of system. Angle difference
between the three phase is 120 degree which is balancing
the system and we are getting neutral at star point for 230
volt equipment.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / sudhir
for 4 phase system ,phase difference b/w phase 0,90,180,270
deg.at every instant 0deg phase cancil by 180 deg phase,and
90deg phase cancil with 270 deg phase so resultant voltage
at everyinstant wiil 0.
Is This Answer Correct ? | 0 Yes | 0 No |
What is accuracy of a measurement?
I had attend the ITC (Indian Tobacco Company) interview (For Electrical maintanance).There they was conducted me a written test.And I was passed in that.Now They are going to conduct a Practical Interview in next round.Please help me what practical test they will ask............?
what's the meaning of the negative going half cycle in the circuit containing a bulb and a switch in series with a input ac source. i mean what happens in the -ve cycle. the dir. of current changes or any other thing. if dir. changes then why we use fuse in only phase wire.
sent to a site and asked to explain how you would like a twenty seven flour building should be supplied with lighting and sockets plus a water boiler.
Safety devices in SF6 Circuit Breaker?
How we calculate the size of H.T cable for any transformer & rating of busbar for any L.T. panel?
highest rating of alternator used in india
why trip circuit supervision is taking through breaker contact? what happen if takendirectly?
What happen if a 18 watt fluorescent tube is used on 36watt choke,which one damaged or not damaged, if damaged why that damaged?
What is an alternator impedance value?
How much ph is maintained of water resistance starter for slipring induction motor ?
wat is the difference between real power and reactive power..which is useful..?and how it s useful..wat is the effect of these on a power system...