why are use star delta startor.

Answer Posted / venu

i agree to above ans but it will change from star to delta
after the speed reaching 80%
thnq

Is This Answer Correct ?    9 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?

1506


What is stepper motor. What is its uses?

651


why the pf of semiconductor device is improved the electrical devices

1438


WHAT DO YOU MEAN THE DIFFERENT TYPE OF CURVES OF RELAY LIKE STANDARD INVERSE, VARY INVERSE, NORMAL INVERSE, LONG INVERSE ETC....

1537


what are your career plans upon completion of the programme and the relevance of recity generation to your professional development?

1751






define displacement & magnitude ?

1389


A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.

1335




1898


Why we specify TNC switch with 1NO 1NC ,2NO 2NC ? how we get connection.?

1263


how to select proper cable for ct wiring so that drop within the limit.

1453


What is vacuum circuit breaker.define with cause and where be use it device?

726


electromechanical relay type identification example : type=tjmh t-stants for j- m- h-

1945


How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?

1511


why ups rating in kva? and why ups are in parellel?.why isolation transformer is used in ups?

1467


What is the form name of 'c' license, I want to download in web

1405