ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Engineering >> Electrical Engineering
 
 


 

 
 Civil Engineering interview questions  Civil Engineering Interview Questions (3010)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3270)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13221)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2348)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (407)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (76)
 Bio Engineering interview questions  Bio Engineering Interview Questions (16)
 Metallurgy interview questions  Metallurgy Interview Questions (79)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (162)
 Instrumentation interview questions  Instrumentation Interview Questions (2317)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (104)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (43)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (73)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1189)
Question
Why iron core losses are constant at all loads in a 
transformer ?
 Question Submitted By :: Zohaib Mirza
I also faced this Question!!     Rank Answer Posted By  
 
  Re: Why iron core losses are constant at all loads in a transformer ?
Answer
# 1
Iron Losses = (Kh x Phi^1.2 x F) Watt/M^3
Where Kh - Hysteresis Constant
Phi - Flux
F - Frequency

in above equation Kh, F are constant & Phi increase only 1 to 5% from No load to full Load. Hence Iron Losses are practically constant at all loads.
 
Is This Answer Correct ?    8 Yes 0 No
Deepak24
[BHEL]
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
If we have 15000kw connected load in a factory than how much power demand sanction should be taken from electricity board. Pls provide complete calculation.   3
what is the basic difference between capacitor and condenser ? ABB 14
How Earthing is prevents shock?Explain   4
1 sq.mm alluminum cable hou much current caraing capacity   5
ON WHAT BASIS LOADS ARE CLASSIFIED AS RESISTIVE,INDUCTIVE AND CAPACITIVE LOADS?.GIVE PRACTICAL EXAMPLES FOR EACH   6
What happens if the Capacitive Voltage Transformer Primary neutral is not earthed. There is a CVT between Transformer and source, and the CVT neutral of the transformer is not earthed, does it effect the transformer while charging or does it effect the transformer charging process.   1
what are the types of control systems to control the speed of the motor??   1
We have 2 11kv/433v transformers for 2saperate acb for mv panels and 1 bus coupler acb. Suppose Iíll close bus coupler what will happen or it will be share the load. Please suggestion and any modification required.   1
what is the size of ht cable of 33kv ht line and transformers ratings are 2.5mva and 5.5mva.please send formula also.   1
What shall be minimum thickness of firewall in between two transformers and which code specifies it ?   1
WHAT IS THE COMPLETE DEFINATION OF POWER FACTOR?HOW IT CAN BE IMPROVED?AND WHAT IS CAPACITIVE LOD AND INDUCTIVE LOADS   2
Assume a condition such that two motors of rating 6.6kv,415v are connected to blower,so tell me which motor draw large current give appropriate reason? NTPC 2
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright © 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com