how to reduce humming noise in transformer?

3 Answers  

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difference between ac motor and dc motor

5 Answers  

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do we need NGR panel when the output of the genset is LV but after that it is step up to 22 kv. condition is 12 genset 400v are operating in parallel.

1 Answers  

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how the direction relay sense rhe directional fault?it's forward or reverse?

2 Answers  

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Why grables are put in substation?

1 Answers  

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Why 36 KV LA is used in 33 KV Line and 9 KV LA is Used in 11 KV Line

1 Answers   APTransco, Bhel, Wipro,

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Define open loop control system.

0 Answers  

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How the Transformer oil testing is done & Why oil dielectric goes LOW & what is solution for that ??

3 Answers   NTPC,

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what is the use of reactive power

3 Answers  

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what are RCBO ?

4 Answers   GE,

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Wht ar the reason for low voltage on consumer side?

6 Answers  

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How does an induction motor start?

0 Answers   Ericsson,

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