why corona loss is less with negative polarity?
Answers were Sorted based on User's Feedback
Answer / ashish gupta
Although the density of free electrons around the positive conductor is less as compared to negative conductor but the electrons are highly concentrated around the curved surface of the positive conductor and hence for same energy that has to be dissipated in corona, the activation energy require to enegerize the electrons to take part in corona will be less in case of positive conductor as compared to negative conductor.
hence due to participation of large no. of high energy electrons around positive conductor in corona as compared to negative polarity we can say that corona losses are higher in positive conductor as compared to negative conductor.
Contact: ashishguptaa164@gmail.com
Is This Answer Correct ? | 6 Yes | 3 No |
corona loss is obviously less when compared to the poztv
polarity or (phase)
to understand this we have to know the corona phenomenon,
the air surrounding the HT OR HV conductor gets ionized due
the high potential (nd skin effect also) and this ionised
air also acts as conducting medium, hence the losses okkurs
there. but koming to the negative polarity, the voltage is
very less hence the ionisation of the air surrounding is
very less (comparatively),, henc the corona loss is minimum
with ngtv polarity.
any queries regarding this plz kontakt srikrishna_2020@yahoo.com
Is This Answer Correct ? | 1 Yes | 12 No |
corona loss is obviously less when compared to the poztv
polarity or (phase)
to understand this we have to know the corona phenomenon,
the air surrounding the HT OR HV conductor gets ionized due
the high potential (nd skin effect also) and this ionised
air also acts as conducting medium, hence the losses okkurs
there. but koming to the negative polarity, the voltage is
very less hence the ionisation of the air surrounding is
very less (comparatively),, henc the corona loss is minimum
with ngtv polarity.
any queries regarding this plz kontakt srikrishna_2020@yahoo.com
Is This Answer Correct ? | 2 Yes | 14 No |
what is the difference between analog and digital signal?
iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.
The coulomb is a unit of:(a) Energy(b) Voltage(c) Power(d) Quantity of electricity
Which type of moter is used in trains, what is the ratting of supply used explain Working principal?
I Need standard operation procedure(SOP)for 500kva Oil type transformer oil filtration & Procedure for IR value checking.
why we need to us lenz's law for synchornous motor
what is the differencce inn series and cascade connection??
1.why we are using blocks in withoutgaplightning arrester 2.why we ar using bushing in withoutgap lightning arrestor
What quedtion to ask a electrical maintenance technician?
5 Answers Bhel, Royal Furnishers,
why capacitor do not switch ON the DG power? (I had checked, capacitor ON in DG power that time current rating was reduced.)
what is the function of rccb how it diffrentiate between elcb
16kv transformeris stolen in my village.and department is not taking action.then what should i do.any shortcut .please help any idea