Answer / srirama

due to airgap between the lines

Answer / raja

in practicaly if the pin insulator losses its insulation
also it will happen
loose conection between two pin insulator also it happens
and due corona effect also it happens

Answer / sunil.dutta

all answers are wrong. Please understand question carefully.

Humming noise in tr. lines is due to charging and
discharging of lines under very high voltage.

Answer / sudharsan

Due to the production of faint yellowish gas around the
conductor ...(due to ionisation of gas ) called corona.

Answer / guest

because of hysteresis losses

Answer / durgaprasad

Because of transfer the high voltage & current

how much current capacity 250 amp. mccb please tell me about whats are the reasons to trip 2 or 3 times in a night. and what are the steps to short out this problem

1 Answers   Havells,

how to use single phase supply for a three phase equipement.

12 Answers  

How to do the meggering for a cable.

6 Answers  

how the 3phase induction motor is running in 2phase supply with help of capacitor?

1 Answers  

what exactly commisioning work does in electrical site work... LT side?..

0 Answers  

differentional compound gernater used for wielding porpose. why????????//

2 Answers  

Define non-touching loop.

0 Answers  

What is master trip relay? How does it work?

1 Answers  

wht is an AVO metre. and whre it is used?

1 Answers   Mayflower,

what is meant by excitation which supply is used whether ac r dc in the lab applications

1 Answers  

what is main difference between live tank and dead tank current transformer?

2 Answers   Atul,

can we connect both delta and star to the transformer secondary and for what reason?

5 Answers   Power Grid,