Answer / electrix

When High voltage passes through bare conductor. The
voltage ionises the air around its circumference. This
causes the hissing noise and the same is called corona
effect.

Answer / sreemani84

its called as CORONA Effect. whenever high supply passing
to the open wire its react with moisture.

Answer / lakhan.self

When voltage gradient is or more then 21.2 KV/CM in normal atmospheric condition in overhead transmission line causes air ionized around the conductor resulting faint voilet glow,production of ozone gas and hissing noise called corona

why ground clearance of EHV line is more than HV line??

2 Answers  

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Why Drives are used to run AC motors?

3 Answers  

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1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?

0 Answers   L&T,

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1.Why we use choke?If we use for high starting voltage then different type choke gives different voltage. Is it correct?

2 Answers   Dalkia, Luminous,

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In three phase energymeter the spindle rotating backward why?

1 Answers  

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what will happen if we will not use commutater means if we will give dc to the windings in dc motor

1 Answers  

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1)Why V cross Arm is used in transmission lines? 2)Why H cross Arm are not used in single poles?

1 Answers  

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What is the difference between online ups and offline ups?

44 Answers   Electrical Tech, GMR, Gravity India, HCL, Indus Towers, NIT, Pyramid, Techno Electric and Engineering, UBS,

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what is the difference between 2 way and 4 pole selector switch???

0 Answers   Allied Group,

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why nearly all the voltage levels are in the multiples of 11 like 3.3 ,6.6 ,33 ,11 kv.....

8 Answers   Suzlon,

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what is the disaddvantages of high power factor

2 Answers  

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what clearance required for 4.5 mva dry type transformer?

0 Answers   SPS,

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