Electrical Engineering - Transformers - Discussion

Discussion :: Transformers - General Questions (Q.No.22)


When a 6 V battery is connected across the primary of a transformer with a turns ratio of 8, the secondary voltage is

[A]. 0 V
[B]. 6 V
[C]. 48 V
[D]. 0.75 V

Answer: Option A


No answer description available for this question.

Satish said: (Dec 10, 2010)  
With dc connected source no voltage will appear across secondary.

Sanjay said: (Jun 13, 2011)  
Dc voltage porduce no flux varing field so no emf will be indused and no output will be gerated.

Dipak said: (Jun 15, 2011)  
Induction principle does not work on DC Voltage

Joseph said: (Aug 1, 2011)  
For dc inductor acts as short circuit as frequency is 0.

Arnab said: (Sep 22, 2011)  
Transformer works on the principle of mutual induction & for dc supply, no induction would take place.

Rajib Sautya said: (Apr 2, 2013)  
Battery is no frequency so, secondary side no voltage induce.

Prasath said: (Aug 1, 2013)  
there is no secondary side windings because the ratio is given as 8 only at primary side so the output is 0.

Prakash Meena said: (Sep 5, 2013)  
Constant supply gives constant flux but flux will not linkage with stationary conductor so no induce emf.

Amit said: (Oct 30, 2013)  
With dc input transformer gives zero secondary voltage. That means can't operate.

Dheeraj Jha said: (May 20, 2014)  
I think 6v DC is sufficient to burn transformer welding because cu winding resistance is too less.

Tushar said: (Oct 29, 2014)  
Electromagnetic induction rule does not follow dc.

Vijay Ku Das said: (May 1, 2015)  
Dc only provide stationary flux and tr is also stationary stationary machine. So these two are make 0 degree so these are not cut one another.

Venkatesh B said: (Jun 13, 2015)  
Transformer allows only ac voltage but not dc. So output is zero.

Abhijit Mudi said: (Jul 17, 2015)  
In DC supply occurs then the transformer winding is burn out so no output. That's why output is zero?

Mansukh Kateshiya said: (Jan 5, 2016)  
When the transformer give the dc supply the core is saturate.

Harjinder Singh said: (Jan 9, 2016)  
Transformers always operated on AC, so DC can't work.

Arthur Chatambudza said: (Feb 21, 2017)  
For an emf to be induced, the magnetic field has to constantly change according to Faraday's law of electromagnetic induction. DC does not change as such the magnetic field will remain constant and no emf is induced.

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