Why DC excitation is used for alternators? Why cant it be AC?
- 35 Answers
- 69707 Views
- ABB, Ace Info, Alstom, Shalivahana Power, I also Faced
- E-Mail Answers
Answer Posted / manoj kumar sahoo
DC which does not change its direction & magnitude .So dc
excitation work properly in alternator without change the
pole.And AC change its direction in 50 c/s. Therefore AC
excitation is not suitable for the alternators.
| Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
how does directional relay work incase of ac ?
dg earth connect only in the amf panel or not why
in ring main system we use the isolater b/w transfer bus and main bus if we r not use isolatar than wat will be the effect in our sys.
at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds
testing of Vector Group – YNaoD II
can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?
What are two contours of nichols chart?
If any one's require of phoenix contact like( relay , termilnal block , surge protection device ) , product please contect me 09878206357 chetan verma
In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)
A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.
IN SINGLE PH TRANSFORMER IF LEKAGE IMPEDANCE DROP IS NEGLECTED ,THE FLUX IN THE MAGNETIC CORE and the lekage flux linking a winding are a)proportional to the applied v to the winding i respectively.
What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva
What is the function of interposing current transformer?
what should be the ideal gauge of wire (In sq mm) for different loads in Ampere?
What is the type of earth fault protection used in battery? explain.
