:: 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 What is the d/f between DOL & star delta starter & automatic
star delta starter?
 Question Asked In Companies :: ACC, Dalkia, Indeco, Wipro, Novotel, Engineering, NINL, RMH Control Systems,     < I also faced this Question! >
 Question Submitted By :: ravi
  Answer Posted By  
In case of Star Delta starter the motor intially will run
in star connection and when 80% of rated speed picks, the
motor change over to delta connection. With this star delta
connection we are able to reduce starting current by 1/3 of
DOL starting current and starting torque also.

Is This Answer Correct ?    213 Yes 32 No

  suresh pulipati
View All Answers
Please Help Members By Posting Answers For Below Questions
 Question Views   Select
I want to know Electrical Circuit? 531
What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning 360
How does a battary stores charge in it? please explain in simple manner and in detail.thanks 461
After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage. 398
why we are calculating the capacitance between phase(conductor line)and ground in transmission line?why cant we calculate capacitance between the phase and the nuetral line?if so what is procedure. 488
what is the use of the puls transformer in UPS & how it works??????????? 500
Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks 533
What is grid collapse? what is the reason for it? 312
how many types are their in switchyard or substation(like D,I TYPE), what is differant between them 462
What do you mean by cogeneration? What its working principle? 1243
which book to refer in electrical engineering for iocl exam & which book for general english. 433
Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam. 554
how to minimize earth resistance upto 2&#937;, if the resistance is 6 &#937; ? 316
what is the difference between switch yard to residential area.and how much required it. 206
In diesel generator how AVR get voltage to excitation. And basic diagram DG EXCITATION CIRCUIT. 1311
E-Mail New Answers        Answer Selected Questions