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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
 
What is the meaning of BREAKING and MAKING CAPACITY in case of CIRCUIT BREAKERS.   2
why do we need a 4th wire in 3phase 3wire transmission line   5
why colour of electrical equipment( like transformer) is grey Trident 8
What is Synchronization of generator,where and how it is achieved. Hec 1
motor work in hat principle generator work in what principle transformer work in what principle pls explain with details or answered to ramadoss.sepc@gmail.com Vestas 1
What is P.F? Formula for calculating PF in HT side?   1
whay we used silica gel in Transformer   3
1.In two wattmeter method if one wattmeter shows Negative reading then wat is reason? 2.Wat is the reason for low voltage in houses? 3.Wat is meant by current and voltage? wat is difference between the two?   7
what is the difference between earth and neutral. DLF 8
WHAT IS THE DG OIL SPECIFICATIONS AND WHAT IS THE DIFFERENCE BETWEEN THE DG OIL AND TRANSFORMER OIL   3
What is mean by Sub Synchronous Resonance(SSR)???   1
How to identify Motor leads in their order coming out from winding without tag (U1, V1, W1 & U2, V2, W2)?   6
 
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