1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

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Briefly describe three methods that are usually used by electricity suppliers to control voltage levels?

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A charge of 240 C is transferred in 2 minutes. The current flowing is:(a) 480A(b) 120A(c) 2A(d) 8A

2 Answers  

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if two transformers are parallel & both have fault short ckt. impedance of 50KA in each case will it increase or decrease show example?

1 Answers  

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What is the use device of the grid.

1 Answers   Premier,

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send me any model test paper of clerical post of state bank of india.......

0 Answers  

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what is power?

1 Answers  

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cause of failure of transformer bushes

3 Answers  

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why steady state stability limit is greater than transient stability limit ? How it can be explained ?

0 Answers  

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Why we use 2core cable for Dc motor.Can I use 3core?

5 Answers   JK Paper, Maharaja Whiteline,

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what is the purpose finding power factor?

3 Answers  

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What phase difference between p and s winding of transformer

1 Answers   MAHINDRA,

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