What happend if we connect star point to
ground of a star connected motor?
And what will be effect on system and
effeciency of motor?
Answer Posted / rizwanarain93
If we connect star point of star connected motor the star connections will be city converted into line to ground network which will increase the system voltage by 73% and it will cause a high current flow through motor and all motor design factor will effected seriously and there is high risk of insulation destruction
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
how to Select its CORE in electrical cables based on its applications? or Application of various types of electrical cable based on it CORE?
how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.
Why do we require transformer with less specific weight if supply frequency is increased?
Which type of a.c motor is used in the fan (ceiling fan, exhaust fan, pedestal fan, bracket fan etc) which are find in the houses ?
what is the importance of earthing system on the generators big capacity and small?
How to calculate cable size by using load.?? Any formula...
please send me previous year questions of jspl through which i could prepare myself for the test.
how to calculate maximum current
How two nos. 130 kw D.C motor get synchronise using D.C drive.
how circuit breaker work.. what is the operations taking place inside a circuit breaker when an overcurrent occurs... is it similar to fuse?
i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.
actually i can't understand what is 3dB ? and it's really not clear to me.please any one let it me be cleared.
WHAT IS VCB SAFETY
What are Contactors? How they works and what its highest rating?
How will A Medium voltage circuit breaker(11 kV voltage level) operate under short circuit fault condition whether It is having short circuit release like Low voltage circuit breaker or relay should be given?