In batteries after completion of charging which colour gas is emitted from it?

2 Answers   Essar,

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errection check list for transformer maintenance

0 Answers   RRB,

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type of transformer

3 Answers  

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how many types control panel of a 132/33 kv substation

0 Answers   Alstom,

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If current flows through conductor it produce magnetic field only.but if current flows through vaccum both magnetic & electrical field produce why ?

4 Answers   NTPC,

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1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

1 Answers   TVS,

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why in transformer there is not rotating fiddl/ magnetic field like motor

4 Answers  

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Why is DC use instead of AC for protection and control circuits?

4 Answers  

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will a transformer work when pulsating dc id applied to its primary?? what will be the result??

2 Answers   cemp,

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IN 6.6KV 3 phase switch gear .i will give 6.6kv to R phase only to earth in during H.v testing (through H.v KIT).what happen remaining phases.how much voltage get remaining phases.why? explain.

1 Answers  

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Can clean earth cable be considered as low current cable

0 Answers  

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In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.

0 Answers   Saint Gobain,

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