what are frequency changers ? Tell me about commertially availble frequency changers ?

1 Answers   GE,

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what types of cable used in underground coal mining?

0 Answers  

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What is evaporator & condencer & compressor

0 Answers   Standard Chartered,

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How Much Capacity of Diesel Genset is suitable for 20 no.s of 1.5ton AC's & Why?(Load Calculation)

11 Answers   Lapis Technologies,

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What is percent age of scrap of wires as per IE Rule Clause No in wiring for House and Industrial wiring ?

3 Answers  

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Why are calling lagging power factor is a inductive load?

2 Answers  

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Is it recommended to apply H.pot test for new cables segments after terminations or joints, however, this cable has been tested before at the manufactor by the vendor ? or only we can apply megger tests ?

1 Answers   Centroid,

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what type of insulation is used for over head lines?

4 Answers   NTPC, WS,

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Why armour HT XLPE power cable required to Earth?

1 Answers  

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What is meant by the KA-rating of a circuit breaker? In this regard, discuss the stresses experienced by the circuit breakers

3 Answers  

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What is majour reason of Electrical Arcing ?

9 Answers   ABB,

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what are tpes of insulaors& its uses

1 Answers   ABC,

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