what will happened to give the dc supply to ac transformer?

Answer Posted / chandrasekhar chatterjee

after giving dc supply to ac transformer,magnetic saturation occurs after a while.As a result flux will remain constant i.e.there will be no change of flux.And as a result no emf will b generated.
2.In dc supply frequency is 0.so all the inductances in transformer act as a short ckt.So huge current will flow and will damage the coil.

Is This Answer Correct ?    15 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the difference in calculating size of AC cables compared to calculating size of DC Cables? Usually DC Cables are larger than AC Cables although they have the same ampacity. Why is it?

1528


what is kondo syatem in eletrical traction

1672


What is the function of attenuator in cro?

741


a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn

965


How to measure current and voltage in an ELV circuit

3620






how to find number of run cable laying[LT side] for transformer & alternator secondary side? [above condition for getting output power transformer to main panel side] give the example.

1603


What is the end effect of linear induction motor ??

1576


What are the types of excitation system?

1480


PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL

1423


What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

1563


why do we use 25kv supply for traction purpose?

1512


What is touch potential and step potential?

1631


What is the meaning of C1, C61, C91 cable

2854


What is the formula to calculate a three phase alternator

1790


What is kvar?

859