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Question
What is the formula for calculating transformer Efficiency?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Output Power/Input Power*100 
Is This Answer Correct ?    10 Yes 1 No
Hcnaidu
 
Answer
# 2
%eff=(output power)/(input power)
=(output power)/(output power + total losses)
=(output power)/(output power + iron loss + cu loss)
 
Is This Answer Correct ?    2 Yes 1 No
Bhavana
 
 
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
the circuit having same properties in either direction is known as.......   2
What is short circuit analysis of electrical networks?What are the procedures to be followed for its calculation? DLF 2
what are the types of Distribution transformer vector group please explain   7
i have one source transformer with the capacity of 50KVA, connected with two loads 10kw and second one is 15kw.. how can i calculate first load in KVA and second one in KVA .. because Kva rating, power factor rating of of transformer is different from the load… there must be some way to calculate load KVA rating and power factor….   1
if we convert kw into Ampers,which one formula use by us,pls tell me? ABB 9
what are the shades for mimic diagram i.e for 3.3kv,6.6kv,11kv,22kv and 33kv? which is the IS for mimic diagram?   2
what is slip rings in an induction motor&what is it's work.   4
how to select the surge suppresor for the 33 KV supply and what will be the rating, selection guide   1
i have 400/230v transformer and didnt done the neutral eatrhing. i connected one lamp to one phase and neutral to the earth. but the lamp is not glowing. again i connected neutral to earth and repeated the same. then the lamp is glowing. in the first condition i tested with a line tester also, at that time the tesrer is glowing what is happening i dont know can any one help me?   1
How we can convert H.P into KW or Vice versa Suzlon 11
why two windings are using in single phase AC motor   3
How open delta used for protection?   4
 
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