Answer / nilkanth

Earthing trucks mainly used in HT side to prenent earth
fault.when fault occures huter in the trucks oparate and
prevent the damage to the panel

i am going to attaned the engineer (disign)iterview at HAL please give me duid line

0 Answers   HAL,

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what is Ith current?

4 Answers  

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How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

0 Answers  

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What is the advantage and disadvantage of dry type transformer?

5 Answers   Bhel,

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From stability point of view,What(higher/lower) should be the value of inertia constant of rotating machines?

1 Answers  

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How to size Air Circuit breaker (ACB)? What is the most important factors?

0 Answers   ABC,

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What value(high/low) of diversity factor is desired in power system and why? How such value is achieved?

1 Answers  

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What does the temperature (30 deg or 35 deg celcius) mark on conservator of transformer indicates?

2 Answers   MahaGenco,

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How earth fault & earth leakage equvpment are works?

5 Answers  

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what is difference between line differential and transformer differential?

0 Answers   L&T,

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1> what r different types of fault in cables? How will u locate and test these faults? 2> why earth wire is provided on top throughout the transmission line. why not only on towers? How much area it can protect? 3> what r different types of transmission losses? How power loss can be minimized? 4> what is the % of power loss on transmission lines?

3 Answers   IOCL,

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v=r*i this means when voltage increases current also increases at constant resistance.... p=v*i this means when voltage increases current decreases to maintain the power constant which one is true...

3 Answers  

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