if we supply DC power to AC transformer then what its result?
Answer Posted / alok ranjan
when dc supply is given to the transformer momentary emf will be generated at the secondary side and will collapse suddenly.
because flux does not change periodically due to dc supply.it changes only when it is switched from off to on or on to off.
primary coil may burn but Burning or not burning of primary depends on design consideration whether it can carry current according to applied voltage or not.because for dc,inductance will be zero so resistance of primary will be less than ac impedance, so current and I^2R loss will increase may cause to burn.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.
hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.
If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?
what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?
how can we determine size of a cable by knowing the kw or current rating of a load?how can we calculate the resistance box of a slip ring motor?
Explain the different regions in frequency response?
HOW TO SET THE EARTH FAULT SETTINGS IN ACB????????????
what is the role of transistor in Circuit?
What is the safety of UPS?
how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?
how to calculate current and voltage in a same circuit?
WHAT IS MEANT BY DERATING OF THYRISTOR?
hi, in the event earth grounding is not available in a project, is there any other way to make the elcb work? fyi, i have an instant water heater (6.5kw) installed, however if there is grounding in the heating element inside the heater assembly, i will get grounded. thank you in advance to those who will answer my question.
List some examples of renewable energy?
I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF