Answer / iamdon

If we supply DC to primary of transformer no emf is induced
in primary side(Accordibg to Faraday laws).It means whole
applied voltage is droped in primary winding resistance
which is very low.So high current will flow through the
primary winding which ultimately burn the primary winding.

Answer / shariff

If DC is applied to the Power Transformer, this is basically a inductive coil, as freq. is zero is DC, inductive reactance offered is zero i.e. XL=0, then it is as good as short circuiting the DC power supply, if the DC power supply can feed that much current, then that power transformer wdg will burn or due to its resistance the wdg may get heated up.

Answer / chatap

No flux will generat and primary takes high current and may burn

Answer / jyoti

NO FLUX WILL TRANSFER FROM PRIMARY SIDE TO THE SECONDARY
SIDE.HENCE THE TRANSFORMER DOESN'T PERFORM.

Answer / aravind

if current is very high it may burn out the windings
but if current is low then primary winding acts as an inductor

How to calculate VCB current rating for 2000 KVA transformer

1 Answers   Yamuna Power and Infrastructure Ltd,

when 40 watts and 60 watts bulb is connected in series, which bulb glows brightly ?

5 Answers  

what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV

0 Answers  

What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?

0 Answers   K-Electric Limited,

what will be the min and max voltage flow from neutral to earth?

0 Answers  

What are the components connected in between the power supply coming from an electric pole to HT & LT Panels in a large commercial building or how the power supply connected from Electric pole to Transformer & then to the HT & LT panels of a building? Please send me answers via mail, my id is yogiagarwal@gmail.com. If possible, please give a line diagram.

0 Answers   Ranbaxy,

why we are using the ac supply in domestic purpose why don't use dc supply

6 Answers   Airtel, SSIL,

What value of resistance required between Saftey earth and instrunment earth , maximum and minimum values required

1 Answers  

I have a one P.F meter in my factory showing 2 phase leading and one phase lagging then what is my actual P.F.

1 Answers  

Why only 1ph,2ph,3ph supplies are universally used?? Why not 4ph or 5ph??

4 Answers  

How many kinds of E.L.C.B and how to work E.L.C.B

0 Answers   Accenture,

transformers parts & function of each parts

25 Answers   Amara Raja, Bhutan Ferro Alloys Limited, Breather, Electrical, Electrical Tech, ERDA, GVK, Juniper Networks, Matrix, Mechanical, NFL, Oracle, Pyramid Plastics, RPPL, RRB, Siemens, TCS, Tulip Silk Mills,