Interested to Buy Any Domain ? << Click Here >> for more details...
What is negative phase sequence?
- 7 Answers
- 92160 Views
- Hindalco, Universal Associate, I also Faced
- E-Mail Answers
Answer Posted / adil yousuf
Ans ; The negative phase sequence
current will flow due to diffence of three phase volages of
the system.If no difference of R Y B voltage is present,
the negative sequence current will not flow.
In rotating machines an unbalance voltage or current in one
phase winding due to elctrical faults or uneven load
further exacerbates the problem. The magnetic coupling
between the winding becomes uneven.
when subject to unbalance conditions, negative phase
sequence currents produce a counter rotating megnatic field
withrespect to the main field.
The resultant field rotates at double frequency and causes
underirable eddy-currents to flow in various structure such
as the machine rotor body , excitaation winding, stator end
winding and stator iron etc.
| Is This Answer Correct ? | 54 Yes | 8 No |
Post New Answer View All Answers
Define corner frequency?
Percentage losses in power generation?
what type questions asked in hp cl
why the India electrical supply transmission loss is high when compare to us
List the advantages of star-delta starter with induction motor?
How to minimize the eddy current losses?
what precautions to be taken while desigining a LT,HT panel. Eg-LT panel PCC panel with ACB installed. HT panel VCB panel with VCB installed. & what is main diffrence betwn IP54 & IP55 construction of panel.
What is the bundle conductor?
Why increase in current leads to increase in conductor temperature?
I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?
how we calculate the dick for a pole?
what are the precuation should be taken ahen installing power transformer,circuit breaker,current & potential transformer
Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above
What is the mmf,rgt and ngt please brief completely
EXPLAIN USE OF ROCKING ARRANGEMENT IN ELECTRIC HEATING?
