Answer / raj

By modification in electrical ckt.design.

why we measure ouput of transformers in kva.

1 Answers  

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how can we measure the import power and export power in the same line?

1 Answers  

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is electrons really flow or they just vibrate at their position?

5 Answers   Bhel, HAL,

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about transformer oil material & Test name for the measurement of its dielectric strength & wht will u do if its dielectric strength goes low ?

2 Answers   NTPC,

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why the air gap is necessary in the transformer core

1 Answers   Eskom,

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Transformer/insulating oil tester(BDV tester)

1 Answers  

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Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,

0 Answers   APTransco,

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in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

0 Answers  

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A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?

0 Answers   L&T,

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what's the difference between ATS and AMF...??pls answer me in detail with its working principle and construction also..

3 Answers  

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Disadventage of cable-gland earthing if any ?

0 Answers  

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what are the various types of earthing? plz give brief detail of all. also post pictures if u have.

22 Answers   Aster Teleservices, Era Infra Engineering, Micron Electricals,

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