:: 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
   Testimonials Refer this Site  Refer This Site to Your Friends  Site Map  Contact Us      
Categories >> Engineering >> Electrical Engineering


Question Why is starter necessary for a three-phase induction motor?
 Question Asked In Companies :: Essar, Supertech, ITI, BMM, Watt,     < I also faced this Question! >
 Question Submitted By :: ramesh
  Answer Posted By  
The starters are used to limit the starting current to
accepteble value.

Is This Answer Correct ?    93 Yes 11 No

View All Answers
Please Help Members By Posting Answers For Below Questions
 Question Views   Select
Why the output of OP-AMP is always less than Vcc? 362
what are the effects when a salient pole alternator is run at high speed like 3000 r.p.m? 750
why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator. 386
what is the difference between dropout fuse and horn gap fuse. how to choose between them 2643
what reason of line current and phase current in star connection and line current and phase current not equal in delta connection? 425
what is meaning of bus riser 577
I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- 357
What it the purpose of parallel phasing transfomers?? 304
for a 400kv t/m line with 10 ampere current will corona occur? 497
Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station 315
How you will determine the volume of oil in a particular Distribution transformer. 264
how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42. 186
We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application? 450
how to measure winding resistance of single phase motor? 616
The transmission does not have options: a)Partition noise b) Flicker noise c) resistance d) Short noise and reason 439
E-Mail New Answers        Answer Selected Questions