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

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

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.

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.

Answer / love007

DC current is use current is contsant so contant magnetic
flux due which high heat produce which me burn Xmer

Answer / tejesh

transformer include inductor action so it doent allow dc
current

Answer / aruna devi

there is no flux in DC.

what is the function of fire alarm system?

5 Answers  

give me list of material for wiring of 20hp motor?

2 Answers   Alchemist,

What difference between TRANSFORMERS and TRANSDUCERS???

1 Answers  

What are the different types of testing in ht cables?

3 Answers  

i want to know about for what reason we are using star delta starter? how it works? what are the advantages?

4 Answers  

wat is the difference between rotor 1st stage fault and 2nd stage fault?

3 Answers  

State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp

0 Answers  

How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?

0 Answers   Apollo,

working function importance of mdc meter

0 Answers  

What will happen if the oil level in the buchholz realy of a transformer gets down?

3 Answers  

In simply words(not explain any formula )what do you mean by power factor.?

5 Answers   DRDO,

On monitor it is written that current rating is 2.2 Amps. Is it a monitor current drawing capacity or CPU & monitor. If it is only monitor rating, what will be the rating of only CPU and what will be the power consumption rating of PC, Monitor & Scanner? In net, I learnt that computer consumes only 200-300W while running. With the current rating of 2.2 Amps, how it could be 200-300Watts. Please explain?

3 Answers