Answer Posted / s.sarkar

directional over current relay activates on flow of fault
current in perticular direction however non
directional over current relay activate for fault current
above setting.

Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

2086

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i need to now what will be the cable size to the following load, transformer to distribution panel distance 110m, load 1000kw, voltage 400v, pf 0.85, permissible voltage drop 2.0%, overhead line, atmospheric temperature 35 degree c.

1571

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if flux and load static in dc motor and supply voltage increases 20% then what happened in speed

1855

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Is it required to use Automatic transfer Switch in L&T panel board if we use AMF panel with DG set? How the single line diagram will be? Please forward the material to sreenu_207@yahoo.co.in

4665

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The knee point of a current transformer is normally unique and known.So why in the nameplate of a CT they put the minimum value like this Vk> 400v.

1327

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what are the advantage and dis-advantage of 3 phase 4 wire energy meter?

2138

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How to Design green buildings services? What is the advantage to design green building?

1747

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What kind of socket shall be provided for window type air conditioner with cooling capacity upto 18000 BTU/hr

1020

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33kv substation lay out details & line to line & line to earth measurements

2561

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Define resonant peak?

1065

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what is the difference b/w ground & virtual ground?

2264

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How Load Factor, Demand Factor, Diversity Factor etc best applied in designing an electrical circuit? Is it allowed to consider these factors in each and every panel in an electrical distribution system? Can any body suggest a good book for reference?

2843

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how we design a pannel to start 10HP motor with the help of star delta starter?

2146

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What is meant by harmonic distortion?

1055

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why don't we use the generator as a motor? and what will happen?

1835

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