Answer / shimin

Because the value of permittivity of free space is very small compared to permeability of free space.

why we use 11 kv 22 kv and so on ?

1 Answers   Air Force,

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Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV

0 Answers   Bhel,

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If 110 volts ac is mixed up ith 12 volts dc what will be the resultant voltage and what is the wave form?

1 Answers  

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What are the different types of transformers present in the Transmission and Distribution system?

2 Answers  

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I completed iti in2004 I was worked in A grade contractor can I get c licence

0 Answers  

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Why star point of star connected motor is not grounded? Why alternator is operated at lagging power factor?

3 Answers   TCL,

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please tell me, how i clear the objective test? when i studied form the one book after i solved the objective ,that time i solved that qes. but if i tried solve objective form the other book then i could not solved these que.

0 Answers  

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what is the function of breather in a transformer

29 Answers   Areva, Bhel, RKM Powergen, Vijai Electricals,

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Explain What will happen when direction of field current is changed (i.e, field excitation is reversed) in the following machines? 1) Alternator 2) Synchronous Motor 3) D.C Generator ( Shunt or Seies ) 4) D.C Motor ( Shunt or Seies )

3 Answers   NTPC, Transco,

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If there is volagte between earth and neutral, what should be the reason ? and solution * What should be allowable limit in case, if the voltage between earth and neutral exist ? / OR what is limit for safe voltage between earth and neutral?

3 Answers  

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what is softstarter?

2 Answers  

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What is the difference between 11kv/110v & 33kv/110v ? If both 11 & 33KV give 110v then what is the diiference ?

1 Answers  

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