Interested to Buy Any Domain ? << Click Here >> for more details...
star delta connection used in reduce the starting current
at 3 times . how its reduce the current please explian .
- 7 Answers
- 27856 Views
- HP, I also Faced
- E-Mail Answers
Answer Posted / raja
At starting times phase voltage is reduced 1/root(3) times
of line voltage.so motor start safely.after reaching 70%of
speed change to delta.now apply fullvoltage
| Is This Answer Correct ? | 91 Yes | 19 No |
Post New Answer View All Answers
what is the relation between knowing of the distance between power transformer and the capacitor feeder in case of parallel operation
WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING
1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.
how we calculate electrical load on a building according to area?
Main advantage of auto transformer over two windings transformer is that A it needs no cooling B it uses only one winding C core losses are reduced D it has simple construction
why would amp draw on neutral wire be as much as amp draw on the hot leg.
Why lose 1 phase voltage in 33kv to 415v stepdown transformer
what is a bus riser in power system and why it is used
What is bridge rectifier and explain with details
how to calculate insulation level of transformer?
What is the kiosk parts, about them and their functions ? If anybody have some PDFs files or details about this plz send it on tawhidfaisal@Yahoo.com
at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.
What is the unit of magnetic flux density?
Phase control and integral control are used for?
In which working principal temperature transmitter work.explain in detailed.
