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Question
What is meant by Energy Efficient Transformers???

give significance
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
These are transformers specially designed to reduce the losses.

to reduce the iron losses i.e hysteresis and eddy current
losses,they use high graded silicon core and perfect
lamination's with good insulation.

but the copper losses depends upon loading the transformer.
 
Is This Answer Correct ?    12 Yes 0 No
Kiran
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
IF THE LOAD OF TRANSFORMER IS GETTING MORE THAN ITS RATING,,,THAN HOW TO OVERCOME THIS PROBLEM? SUPPOSE THEE RATING OF TRANSFORMER IS 315KVA AND THE LOAD IS GOING BEYOND THAN THE RATING SAY AROUND LOAD: 352KVA... THAN HOW CAN WE SOLVE THIS PROBLEM WITHOUT DEDUCTING THE LOAD. Hyundai 13
what is the formula for converting dc power(watt) to ac power (watt)? ABB 3
what is the formula for calculating of dielectric strength of transformer oil. Bhel 2
How the oil level of the Buchholz Relay come down.   3
How can we calculate the current if we have load in KVA and if the load in KW then what formula will be use for calculating the current. please give both the formula for calculating the current.   3
can we use inductor in case of d.c.,if yes then what will happen in circuit JSW 3
Which theory is used in the analysis of salient pole rotor synchronous machines? Who is credited for this developement? Could the same theory be used for cylindrical rotor synchronous machines?   1
WHAT HAPPEN WHEN CT SECONDARY OPEN DURING LOAD   16
how much earth resistance consider to commissioning the transformer? Deccan-Cements 3
How we can calc. the Backup time of a battery Bank??? Emerson 5
What is the range of efficiency of thermal or steam power plants? Why it is so low?   2
We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?   6
 
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