why DC current not used in Transformer action?
Answers were Sorted based on User's Feedback
Answer / k. aditya
As d.c is given to the transformer a steady flux is draws
and the primary induced emf e1 is 0. so, there is no
limited current and the resistance of the winding is so
small and the wdg may damaged
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Answer / vibhor jain
as dc current flows through a constnat rate so there is constant magnetic flux folws due to which heat is produced which causes the burning of trnsfarmer
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Answer / bin
transformer secondary coil produced emf depends on change in magnetic flux in the circuit.according to Faraday's law of electromagnetic induction says that emf= -n d(Q)/d (t). where Q=flux.so in dc circuit frequency is not produced.so flux is not produced hence no change in flux.i.e. emf=0. even after some times coil may be burnt due dc supply running.
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Answer / mahesh rathod
in the case of DC the flux produced is steady,which doesn't
induce any emf in the primary& secondary wdgs
in the absence of prim emf,the wdg draws high magnetising
current from the source which burnts the prim wdg.
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / love007
DC current is use current is contsant so contant magnetic
flux due which high heat produce which me burn Xmer
Is This Answer Correct ? | 11 Yes | 14 No |
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