Answer / tapeshwar pandey

It should be more than 11 mega ohm as per thumb rule.

Answer / kani

insulation resistance must be infinite otherwise leakage
current will flow ,so that insulation detoriation happen

Answer / murthy

Ideally in the range of 5oMohms is required for less
leakage current.2Mohms per KV of the cable at room
temperature is a thumb rule

how calculate gd2 of ht motors

0 Answers   Hindustan Copper Limited,

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why should we india maintain frequency of 50 Hz.

8 Answers  

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what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?

0 Answers   CG,

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Induction generator has = A negative speed B negative slip C negative voltage D negative current

2 Answers  

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what is the formula for transformer oil?

1 Answers  

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why we used dc supply for field in dg set

0 Answers   Hindusthan National Glass,

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How will you define capacitance?

0 Answers  

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What is the In door to Out door Sub Station.

5 Answers   L&T,

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use of choke in APFC panels

2 Answers   Kemrock,

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Could the power factor on electrical system can affect the registration of the kwhr meter or the CT/PT? 

0 Answers  

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if a damaged 500kva transformer with %impedance 2.6 is replaced by two transformers of 250Kva with different % impedance will they be able to catter the load. what will be the ratio of load on the two transformers if the % impedance is in the ratio 1:2

2 Answers   Siemens,

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As per principle we say in three phase supply ,the voltage is producing by phase angle between two phase so two phase is needed means then why we using three phase ?

2 Answers  

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