Interested to Buy Any Domain ? << Click Here >> for more details...
why we use to transmit the power in three phases intead of
single phase ?
- 5 Answers
- 9251 Views
- I also Faced
- E-Mail Answers
Answer Posted / paul
I do not think the previous answer is correct. Three phase is more efficient (Power In v Power Out) in respect to AC motors, and is also more cost economical in regards to power transmission as less copper is required for the same delivered power (given the 3 phase line voltage is taken as being he same as the equivalent single phase voltage therefore allowing the use of cable with the same voltage rating), however..
The transmission power loss (and therefor transmission efficiency) in a three phase systems is the same as in a single phase system (again, assuming same total load power and line voltage).
The previous response has omitted the fact that, even though there is no neutral wire the return current in a three phase system will be subject to I^2*R losses in the associated conductors. Taking R as the loop resistance (supply and return), a single phase system power loss can be calculated as I^2*R. For a balanced three phase system, the single phase equivalent losses will be ((I/root3)^2)*R. Therefore total losses = 3*((I/root3)^2)*R = I^2*R.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is different between Circuit breaker and Isolater?
what is the basic need of domestic loads 1- voltage 2- current
how withstand of hi-pot test outputs of transformer wire 2.5mm
33kv Rated output avilable in market (any where in india)
What are gain margin and phase margin?
hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.
How to calculate fault level of 11 KV system
Explain dc generator with its types?
What is Anemometer used to measure?
How many gap between finger contact in a.c.b. and v.cb.?
How many types of interlocking use in screw type air compressor,make-Kaser(BSD MODEL)?
What are the classifications of heating element?
induction 3 phase motor terminal connection
If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?
Describe the test procedure to determine the vector group
