when u are given a timer,push buttons and contactor, how do
i practically make a star delta control circuit and a direct
online control circuit?



when u are given a timer,push buttons and contactor, how do i practically make a star delta control..

Answer / anil

most induction motors are started in direct on line, but when large motors are started that way because of disturbance of voltage on supply lines due to high current . to control the starting current we the star delta connection using direct of line control circuit using connectors and timer to reduce the starting current

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

what will happen to give a dc supply in transformers?

3 Answers  


why tube light flicks??

1 Answers  


Why there is not any reactive power in DC although it causes magnetic field.

7 Answers  


what is the difference b/w KVA and KW? the transformer are mentioned KVA rating and the loads are mentioned KW.why?

2 Answers  


describe the constructional features of an auto transformer and its principle operation

1 Answers  


EXPLAIN THE TRANSFORMER MAINTENANCE?

1 Answers   Enercon, ERT, GEL,


A 230 v dc series motor is connected to 230 V ac supply, then

1 Answers  


working principle of oil startar

1 Answers  


its Kva and Kv are same?

3 Answers  


how to check avr of dg set of 125kva

1 Answers  


is the power of a single phase induction motor(Fans) is constant under varying speeds?

4 Answers  


what are corona losses

3 Answers   Siemens,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5086)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4453)
  • Electrical Engineering Interview Questions Electrical Engineering (16638)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)