Answer / prabhakar sankle

Transformer functioning only with a.c supply.Because there is need mutual induction in coil and core.It couldn't happen with DC supply.

Answer / pavan sharma

If dc supply is given to xmer then pri wdg has no recatance so impadance is low due to low resistance so dc supply burn primary

what is meant by VDC ?where its applicable ?

2 Answers  

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What is IDMT relay how it works.

3 Answers   Electrotherm, Sulzer,

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What is CCTV System???Applications........

16 Answers   Emerson, Honeywell, Joyalukkas,

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what is the difference between contactors & relay.

2 Answers  

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on which power factor synchronous motor run

2 Answers   Bhel,

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any body know about lighting arrestor. how to determine the height of lighting rod from top of bulding and how many area it cover.

1 Answers  

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what is phase to phase fault? what is line to line fault?

6 Answers  

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what are the protections used in power transformers of 5 mva and above

2 Answers   ESRI,

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during parallel operation of two ac generator which condition must match before taking both parallel i.e speed /voltage rating /kva/exciation

2 Answers  

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in dc shunt generator field is open in running condition what will happen?

8 Answers   century,

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how to select the surge suppresor for the 33 KV supply and what will be the rating, selection guide

1 Answers  

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how do using transformer 30 deg lag or 30 deg lead

1 Answers  

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