Why material of brush is carbon in motors why not other material.

5 Answers   NTPC,

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I am having a DG set.The 415 V from Generator is step up to 460 v and then the same is used for Induction furnace. before Step up, I am connecting LT load to my factory use. When Induction furnace is in service from DG, when i try to start a motor, the generator is tripped.Please tell me the reason.

3 Answers  

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flush point of transformer?

2 Answers  

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i have a roll dia aprox.43 inches and gear box ratio is 14.3.so my question is how was decide the kw rating of motor.

1 Answers  

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how rated the neutral voltage of transformer and reactor, e.g. 400/220, 200MVA transformer have neutral voltage of 33kv. and reactor voltage 145kv. how this rating decided?

1 Answers   MEIL,

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Can 2 nos. of 1 ton split ac be used through a 20 am supply meter?

3 Answers  

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what effect will 10 milliampere current cause to human body

1 Answers   NPCIL,

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why transformers are sometimes kept on concrete benches..?

2 Answers  

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How to identify Motor leads in their order coming out from winding without tag (U1, V1, W1 & U2, V2, W2)?

6 Answers   ABB,

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What is the need for a controller?

0 Answers  

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why we are not earthing ht cable at both the ends(sending & receiving end)?

5 Answers   Essar,

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which type of oil is used as a transformer oil?

3 Answers   JSW,

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