what are the units of cable insulation?

3 Answers  

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is it possible to use a tranformer to regulate an unstable system voltage?

3 Answers  

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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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I need tnpsc AE Electrical question papers

2 Answers   TNPSC Tamil Nadu Public Service Commission,

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IN A MAGNETIC MATERIAL HYSTERYSIS LOSS CAN'T BE REDUCED TO ZERO. HY?

3 Answers  

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An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

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As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why?

2 Answers  

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why the earth pin is thicker than other pins in a plug? If it is for reducing resistance, then why the copper earth wire is not so thick as earth pin of socket?

5 Answers   Omax,

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what is on line transformer and off line transformer.

3 Answers   Cisco, HP, ICC,

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What are the maximum and minimum ratings of MCB,MCCB,ACB,OCB,VCB and SF6 breakers?

2 Answers   ABB, SK E&C, Sodexo,

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How to Measure A.C Resistance for Earthing ?

2 Answers  

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what does a string of resistors in a series will do?

0 Answers  

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