what happens when we apply dc to a transformer
Answer Posted / santosh kumar garnayak
when dc will be applied to transformer,as inductor will be
short circited(in dc f=0 so xl=2*pi*f*l=0) so net resistance
(I=V/(R+XL)=V/R ) will decrease and high amount of current
will flow which will result in damage to the transformer`
| Is This Answer Correct ? | 19 Yes | 1 No |
Post New Answer View All Answers
how to calculate the tarriff for an industry whose kva demand is 10 mva
what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks
What is the effect of positive feedback on the stability of the systems?
what is the importance of earthing system on the generators big capacity and small?
How to calculate that clean water supply in one Day from 150 KLD STP?
how to decide choke rating for drive?
can i use the six sigma method which is used in management area, in state estimation of power systems?
FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?
why you don not show protection and type of isolation in key single line diagram?
what is difference between line differential and transformer differential?
Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.
In dc ckt. 24v or 110v, which one is more efficient and why?
how can check the resistance of battery contact?
How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.
. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?