Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 18)
18.
The primary of a transformer is connected to a 6 V battery. The turns ratio is 1:3 and the secondary load, RL, is 100 
. The voltage across the load is
. The voltage across the load isDiscussion:
27 comments Page 1 of 3.
Ajayajjv said:
1 decade ago
Primary winding will burn only when will you give more amount of DC supply if you will give less amount of DC supply primary winding will not burn.
If you will give DC to the primary wdg of t/f the flux produced by the primary wdg is constant so the rate of change of flux is constant according to Faraday's law emf will induce in the conductor whenever flux cutting action takes place. There is constant flux so induced emf in secondary is "0".
If you will give DC to the primary wdg of t/f the flux produced by the primary wdg is constant so the rate of change of flux is constant according to Faraday's law emf will induce in the conductor whenever flux cutting action takes place. There is constant flux so induced emf in secondary is "0".
Torpedo said:
1 decade ago
Transformer acts as a short to DC. So when the primary is given a DC input there will not be any coupling between primary and secondary. Due to this the secondary side voltage or the voltage across load is zero.
Manikanta said:
10 years ago
Transformer do not work on D.C because the changing flux not produced automatically Emf is not induced in it so current will not produced. It work on DC transformer will burned. So transformer only work on A.C.
Nitesh said:
1 decade ago
Transformer acts as high inductance and low resistance, but under DC inductance gets zero and due to low resistance a very high current burns the windings and thus the Transformer.
Shivaganesh said:
1 decade ago
With AC Voltage only we get the alternating flux. Without the alternating flux to the core of the transformer there is no EMF induced in the secondary winding of the transformer.
Prasanna said:
6 years ago
We know that e=N(dflux/dt).
For dc supply flux is constant and derivative of constant is zero. So emf induced in secondary becomes zero i.e, e=0.
For dc supply flux is constant and derivative of constant is zero. So emf induced in secondary becomes zero i.e, e=0.
(1)
Trilochan Mahapatra said:
6 years ago
The transformer will work on only A.C supply/source. But the battery will provide only D. C source & transformers don't act in D.C source.
(2)
Akash said:
1 decade ago
Soln:- Transformer works on AC. Supply so there it will not be operated or if we given the DC. Supply of high voltage its windings get burnt.
Aniruddha ray said:
1 decade ago
Transformer has working mutual induction effect. In battery D.C. supply fluction flux not developed so secondary voltage zero.
Waseem guru said:
1 decade ago
Transformer will work on only A.C. supply. But battery will provide D.C. supply so no question why transformer is not working.
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