Question { 17181 }

if we supply DC power to AC transformer then what its result?

Answer

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.

Question { 17181 }

if we supply DC power to AC transformer then what its result?

Answer

when dc supply will be 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.

Question { 17181 }

if we supply DC power to AC transformer then what its result?

Answer

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.

Question { 17181 }

if we supply DC power to AC transformer then what its result?

Answer

I am sorry, by mistake I posted one ans. three times. I request to admin please delete any two.

Question { CSPL, 4057 }

Why in India distribution transformer are connected in Dyn11
when we know capacity of v-v connection can be increased by
adding only a single transformer?

Answer

In India according to indian standard we use + or - 30 degree phase shift between LV and HV side.
so we can use Dyn11(for star LV is leading delta HV with 30°) or Dyn01(for delta HV is leading star LV with 30°)

It depend on 12 hour clock like 1=30°,2=60°......11=330°or(-30°),12=0°

Question { 6440 }

what should be the BDV
value Of 11/132kv power
transformer

Answer

If u r asking about BDV b/w layer it depends on voltage per turn selected and turns per layer. you hv to calculate accordingly.

Question { CESC, 8093 }

What happens when DC supply is given to transformer

Answer

when dc supply is given to the transformer momentary emf is generated at the secondary side and collapse suddenly.
because flux does not change periodically due to dc supply.