Answer / jai sharma

tol r setting should be 80% of tripping current b'cos thermal effect in bimetalic conductor strips starts heating from 80% and then after few 4-5 minutes at 100% trip or actuated

What are HT & LT Cables? What are their values?

3 Answers   IOCL,

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all interview questions with answers of ntpc (2000-2009

0 Answers   Hetero, NTPC,

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How will you Physically differentiate A.C and D.C motor?

10 Answers   BSNL, Polycab,

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what happens in the short circuited secondary transformer,if the resistance of the short circuit is increased gradually?

0 Answers   IIT,

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What is a doble test

1 Answers   KPSC Karnataka Public Service Corporation,

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What is the angle of inclination for the oil connection from transformer conservator to Bucholz relay and why?

0 Answers   Alam Group of Companies,

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explain LED lamps?

1 Answers  

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what is XF 200/240 V AC for Drawout Breaker.

1 Answers  

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why are transformers rated in KVA and not in KW

8 Answers   ABB, Bosch,

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In CT, burden is 15 VA and protection 5P20,CT ratio is 100:1 then what would be the knee point voltage ?

2 Answers   ERL,

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In dc motor starter there is less voltage required for holding contactor that's may why it is called no volt coil. but in ac starter why holding contactor is called no volt coil.

2 Answers   JSW,

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what is stray loss in transformer?

19 Answers   Vijai Electricals,

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