:: 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 At :: essar, for facility manager, iti, fist start time contact pickup ?, how would you connect ammeter, voltmeter and watt metetr in a circuit, watt meter, bmm hospeat, supertech, supertech
 Question Submitted By :: ramesh
I also faced this Question!!    
Answer Posted By  
By starting an induction motor with starter limits the
starting current and starting torque .

Note - Upto 5 to 7.5 HP Three phase induction motors
generally started direct on line .

Is This Answer Correct ?    196 Yes 33 No

View All Answers
Please Help Members By Posting Answers For Below Questions
 Question Views   Select
how to calculate fuse rating for a motor 2147
What is the field weakening mode of a ac motor? 490
what are the advantages and disadvantages of oil filled cables over XLPE cables 5816
What are differences between Voltage, EMF & Potential difference ? 261
what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors 283
how to calculate cable size in diffrent loads? 390
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this< 390
what work will do diffrential realay DG set 982
How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ? 902
why steady state stability limit is greater than transient stability limit ? How it can be explained ? 532
Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards 436
solar energy light efficiency & disadvantages? 315
what is deffrence between squirral cage and wound rotor in IM? 249
what is excitation/ 309
E-Mail New Answers        Answer Selected Questions