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 (3157)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3309)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13490)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2396)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (424)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (77)
 Bio Engineering interview questions  Bio Engineering Interview Questions (17)
 Metallurgy interview questions  Metallurgy Interview Questions (80)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (166)
 Instrumentation interview questions  Instrumentation Interview Questions (2409)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (109)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (45)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (82)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1211)
Question
Whats difference between a single phase & a three phase 
motor?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Single phase motor has pulsating magnetic field and three
phase motor has rotating magnetic field
 
Is This Answer Correct ?    25 Yes 2 No
Jijomon
 
Answer
# 2
3-phase motors are self starting,whereas the single phase
motors are not self starting.
 
Is This Answer Correct ?    17 Yes 8 No
Venkatakrishnan
 
 
 
Answer
# 3
single phase motor can't self started so we use another winding only in starting and then this winding disconnected due to motor speed and also connect a capacitor to make phase different to generate rotating magnetic field but in 3 ph this not happened because rotating magnetic field is self generated due to phases different angle which shifted by 120 degree 
Is This Answer Correct ?    15 Yes 6 No
Ahmed Hamdy
 
Answer
# 4
The starting circuit of of a3-phase motor has a contactor
wherein all the 3 phases of the supply are connected to it.
Whereas in 1-phase motors only 2 phases are required & the
third input of the contactor is looped from it's own
output.The main diffrence can be spoted in the power
diagram itself.
 
Is This Answer Correct ?    11 Yes 12 No
P. Naik
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
How can we decide the fualt levels of sub-stations? Enercon 2
which is the best, A/C DRIVES or D/C DRIVES for cranes,...... ...and why......? Alstom 2
better choice of area of interest to post in our resume? Cognizent 2
HAI,HOW TO SET THERMAL OVERLOAD RELAY FOR DOL STATRTER FEEDER AT START AND RUNNING? L&T 4
What is Ohms law? KPTCL 28
why we use to always generate power below 16kv.why not at higher voltage?   3
Why in Digital Megger for finding Insulation resistance,-ve is applied to core or conductor and +ve is applied to ground. ACC 1
can we say current flows inside an atom as electron moves inside an atom? Vedanta 7
What are series and parallel isolators?   3
How can a transformer test by megger? Bosch 1
How to prepare electrical preventive maintenance plan & shedule of machine tools.   2
What are the advantages and disadvantes of delta and star connections in transformers and alternators?   3
 
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