Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - True or False (Q.No. 3)
3.
A transformer responds only to dc.
Discussion:
12 comments Page 1 of 2.
Anuraag Mishra said:
1 decade ago
Beacause dc burns its winding out.
Zia ahmed said:
1 decade ago
Transformer works on ac only.
Kartheek said:
1 decade ago
Transformer works on principle of mutual induction so it responds for ac and if dc applied winding will burn.
Amandeep upneja said:
1 decade ago
Winding will burn out.
Neha said:
1 decade ago
Transformer has high inductance and low resistance so when dc supply is given inductance is zero and only resistance is present, due to low resistance a heavy current flows and may damage th insulation.
Swati said:
1 decade ago
Yes transformer works only on AC supply.This is because when DC supply is applied across its primary then it draws steady current nd causes constent flux which leads to core saturation nd burns out bacause of low resistance.transformer could be made working on DC if we connect high resistance in series with its primary.
Ramesh said:
1 decade ago
When dc supply is given to transformer the inductor act as a short circit, then heavy currents is passed in the inductor, therefore the winding damaged.
Reddy jagadeesh said:
1 decade ago
Because in the dc thers is no frequency change but in ac there will be a frequency change so we can use ac.
Shravya said:
1 decade ago
A transformer infact never responds to DC. For the transformer action it always demands Ac. Hence, the provision to step-up or down makes AC lines advantageous over corresponding DC.
Rakesh said:
1 decade ago
Because has no frequency so it will not go to mutual induction.
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