Answer / amar

due to star connection
voltage become 0.577
time of original voltage
cause small s.c. Curent
which help in starting.

Answer / isaac achina

Due to star connection to get a neutral for any single phase machine to use

Answer / shyam chopade

due to star connection we can insert easily external
resistance in the rotor winding for more starting torque.

Answer / tarlochan singh

becouse in star connection line voltage =phase

why we use single core 630mm2 cable for transformer secondary side

0 Answers  

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Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

0 Answers  

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what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?

0 Answers   Toshiba,

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What is the Difference between Power Swing and Out of Step?

1 Answers  

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how many types of ratings are there of transformer

5 Answers   Met Trade,

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Why do we need ring main unit (RMU). what is its purpose and its advantages . what is the operating function of rmu

6 Answers   MahaDiscom,

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why generaters need four earthings

5 Answers   Sasken,

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If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

0 Answers   MEIL,

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after how many spot we must chang secondry cable in portable spot welding gun?

0 Answers  

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difference between servo motor and synchronous motor

0 Answers   Hitachi,

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Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

0 Answers  

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WHAT IS LINE TRAP,HOW IS IT FUNCTION?

1 Answers   L&T,

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