# Electrical Engineering - Transformers - Discussion

### Discussion :: Transformers - General Questions (Q.No.21)

21.

In a certain transformer, the input power to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues?

 [A]. 0 W [B]. 14.1 W [C]. 111.5 W [D]. 1,020 W

Explanation:

No answer description available for this question.

 Satish said: (Dec 10, 2010) power at output=input-losses= 111.5

 Mano said: (Aug 20, 2011) In a transformer input power=output power here input is 120, and some energy lost..hence output will be......Input-Losses=Output

 Dhileep said: (Sep 17, 2011) For this we don't need to consider the secondary loss?

 Pranay said: (Mar 28, 2012) input = output + losses output = input - losses output = 120 - 8.5 = 111.5

 Deepak said: (Oct 18, 2013) Please to mention the transformer is step up or step down.

 Deepansh said: (Aug 4, 2014) (N2/N1)>1 That is step up transformer. (N2/N1)<1 That is step down transformer. Eg. n2=15 n1=3. For step up answer will be 5 which is greater than 1. For step down answer will be .2 which is less than 1 so, It is clear that.

 Praveen said: (Jun 6, 2015) Please give me correct explanation for this question came in KPCL. They gave different answer that what you gave above 120-8.5 = 111.5. But in KPCL answer key they gave different answer. And I applied the same logic as Indiabix mentioned.

 Praveen said: (Jun 6, 2015) Please give me correct explanation for this question came in KPCL. They gave different answer that what you gave above 120-8.5 = 111.5. But in KPCL answer key they gave different answer. And I applied the same logic as Indiabix mentioned.

 Praveen said: (Jun 6, 2015) Please give me correct explanation for this question came in KPCL. They gave different answer that what you gave above 120-8.5 = 111.5. But in KPCL answer key they gave different answer. And I applied the same logic as Indiabix mentioned.

 Praveen said: (Jun 6, 2015) Please give me correct explanation for this question came in KPCL. They gave different answer that what you gave above 120-8.5 = 111.5. But in KPCL answer key they gave different answer. And I applied the same logic as Indiabix mentioned.

 Ishpreet Singh said: (Jul 24, 2015) Good explanation.