Why we are checking the vector group & turn ratio of Xformer while PM?

1 Answers  

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What kind of maintenance is conducted for Transformer

0 Answers   Gulf, UB Engineering,

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if you short the any 2phase(R,Y,B),why fuse get blown?

5 Answers   Steel Plant,

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What are the difference between C-Curve and D-Curve for MCB's.

17 Answers   ABB, DLF, Essar, GK companies, Nissi Engineering Solution,

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plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?

0 Answers  

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how to select power and control contactor .

1 Answers   Bhel,

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Dear Sirs, I am a technical persons.In one of our Electrical Sub- Station, We have installed three numbers of 1250KVA ,11KV/0.415KV Transformer to feed the Factory load. We have found some abnormality. In one of our Transformers the leakeage current from transformer body to earth through earth continuity wire is almost 86 Amp but in other transformer it is (5-10)Amp. where the load current on three phase and neutral are respectively 1360Amp,1400Amp,1370 Amp & 176Amp. So please any technical person help me about the reasons of this situation and how I can rectify the fault. Moreover,I have measured the earth resistance of the Earth continuity wire which is less than 1 Ohm. Thanks Tapas Barua

3 Answers  

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What are the types of feedback oscillators?

0 Answers  

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he compression ratio for a petrol engine generally lies between

0 Answers   Caterpillar,

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explain the what is a drive ? 0 4 which type motor r use in the celling fan..... PCB plannet 2 13 If stator & rotor of a 3-phase induction motor have different no. of poles, will the motor run or not?? types of drives Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only. ACC 1 41 how the 3phase induction motor is running in 2phase supply with help of capacitor? 1 33 what is the actual difference betwen constructional details and constructional features? 1 20 how does commutator convert a.c to d.c?

0 Answers  

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What are the safety equipments you should use while you are in a hvac switch yard

1 Answers   GPSC Gujarat Public Service Commission,

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what are the effects when the frequency is decreased in any ac machine

1 Answers  

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