pls tell me about ups internal connection & we have given only 3 phase supply to ups system how get 4 wire (R Y B N )

0 Answers   Bhel, IBM,

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what is the working and construction of generator

1 Answers  

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heat can flow from a body at low temperature to a body at higher temperature only when ........ is supplied from an external source A). Voltage B). Current C). work D). Mass

7 Answers   BMRCL,

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What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

0 Answers  

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in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

0 Answers  

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How much duration I can keep open the CT if it is under loading condition(100 Amp load)?

3 Answers   Infosys, NTPC, Suzlon,

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why motor burns ?

5 Answers  

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what is the value of current as well as voltage upto which we will not feel shock and why?

3 Answers  

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We know that, in case if there is a faulty insulation,or sc, the current is bypassed to earth through the earth wire that has low resistance.Actually, what will happen to that current that flows through gnd?In that case,if we come in contact with that faulty appliance, wont that current flow through us as we form a closed path by standing in gnd?Is grounding a safety measure?

3 Answers  

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what is the difference b/w KVA and KW? the transformer are mentioned KVA rating and the loads are mentioned KW.why?

2 Answers  

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What is the use of Exciter in generator? & what will be the current of Exciter in 500 KVA DG Set?

2 Answers  

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How to make vector group test of transformer?

2 Answers  

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