Answer / gopal agarwal

SURGE arresters are used for arresting i.e. controling
lightining surgs which are accured during clouding.these
lightining surges are of very high voltage ranges such as
many times greater than the rating of equipments ,which will
damage them and hence these are used at both sides end of
electrical equipments for protection.

Wy transformer ratings are in multiple of 11 always?

2 Answers  

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i am swathi, b.tech 4th year. In smps(switched mode power supply)we are using diodes,mosfets,igbts for controling of current. And my question is why we did not use thyristors(scr)? it is also act as a switch,then what is the drawback of scr as compared to above transisters> if we use the scr,then what is happening ? plz give reply as soon as possible bcoz i am doing project on smps. plz frnds i want ans for that. if anybody know the ans plz send to my e-mail id /swathi.tadakapally@gmail.com/

5 Answers   EEE, TCS,

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Please define ohm’s law for a.c (alternating current)?

0 Answers  

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What phase difference between p and s winding of transformer

1 Answers   MAHINDRA,

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What is the meaning of maximum demand

21 Answers   MN Dastur,

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V.c.b and a.c.b difference

4 Answers  

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what is interpose vt where it is used and y it is used?

0 Answers  

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what happen if the battery is charged by more than one source ,for ex: connecting data cable to laptop & charger pin to source supply ? 

2 Answers  

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How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

0 Answers  

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what is the difference between MCB & MCCB

3 Answers  

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how we can explain arc heatng?

0 Answers  

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What is the difference between split AC and Casste AC?

2 Answers   NTPC,

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