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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
 
Why indicated only R.Y.B to phase. Bhel 6
can we synchronize star system generators with delta system generators?   1
america 60hz electric supply is used; but india it is 50hz; why? and if we use 60 hz supply what changeg has to be done or all the equipment has to be thrown which has rating of 50hz frequincy   1
Difference between copper earthing & aluminium earthing?   2
how much percentage set in transformer diffrencialrelay   1
what should be the air clearence between phase to phase, phase to earth in Medium voltage switchgear for 3.3kv,6.6kv,11kv,22kv and 33kv? Which is to be referred for this? Sanmar 1
How to find the maximum load(in KW)in a big industry, having motors,lights,lifts etc..? ME 2
what is rotating transformer? what is the uses of it?i mean applicaitons?   4
HOW CALCULATE MOTOR KW, IF MOTOR NAME PLATE MISSING, WE FIND ONLY MOTOR WINDING RESISTANCE ONLY   1
role of shunt coil in circuit breakers   1
If we touch the Capacitor terminals you feel shock after the capacitor was put in operation and not in case of inductor though both are energy storage elements.why? HAL 4
what is tha between elcb & rccb? Essar 2
 
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