Answer / k.prakashchandra

Maintain a charging current of 10 A ,till charging current
becomes zero at 130% voltage.Then discharge after the
battery has cooled down, at the rate of 10A till the voltage
drops by 10%.Re- charge again before use.

What is the difference Marshaling box and RTCC (Relay tap changer circuit) Panel of transformer ?

1 Answers  

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Can someone explain how does an IDMT relay works.

1 Answers   AFM,

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where they are using surge arrester and lighting arrester? how they connect? what is the purpose of that?

1 Answers  

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hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.

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How does the sensitive earth fault protection provided by cbct for motor can help in reducing the size of cable used to supply the motor?

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why we use only sine wave in ac why we do not use other wave forms

21 Answers   BARC, NTPC,

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A IS TWICE AS GOOD A WORKMAN AS B AND TOGETHER THEY FINISH A PIECE OF WORK IN 14 DAYS.THE NUMBER OF DAYS TAKEN BY A ALONE TO FINISH THE WORK IS 1.11 2.21 3.28 4.42

3 Answers   Ramky,

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PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

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I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase, before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

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What is GNR ? How much value of ground neutral resistance?

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it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?

0 Answers   TATA,

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In one village i have seen Earthing transformer's earthing line was also connected to the Transformer body to ground the transformer,can it be possible to maintain 0Volt reutral line this way?

2 Answers  

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