what is the problem in manufacturing transformer with 0
degree phase displacement.???why alwasys go for DYn11 or
DY5?Whys not DY0 i.e zero degree displacement between
primary and secondary side vectors?
- 3 Answers
- 6400 Views
- Bhel, dpdc, Prime Electrical, I also Faced
- E-Mail Answers
Answer Posted / sujeet pandey
there can transformers with 0 degree or 180 degree phase
displacement like in the case of star-star or delta-delta .
In case of star-delta or delta-star transformer there is a
phase difference of +30 or -30 degree depending on
connection b/w them.This phase difference is due to the
relation b/w phase voltage of primary winding and phase
voltage of secondary winding.
| Is This Answer Correct ? | 18 Yes | 2 No |
Post New Answer View All Answers
what is the question paper model for section engineer in RRB
how we can calculate the efficiency of a diesel generator ?
draw singleline diagram of star to delta and dol starters
critically criticize the application of ring main unit in power system
What do you mean by dependent and independent voltage sources?
what do u understand about FACTS? how they are useful?
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
define as synchronous generator
work of choke in florocent tube circuit ?
In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???
Give details of your interested designation, the post you are interested to serve the company better and explain why you think you can serve the company better in such position if employed?
difrent between vcb acb sf6 and mccb breakers
when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)
how to calculate units consumption for a 12 hp motor /hr.
How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?
