Why -48V dc power supply using in telecom field?

7 Answers   APC, Cisco,

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what is advantage of providing taping on HT side?

4 Answers  

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in my working site. momentary jerck in electrical supply ocurred frequently which cause of multiple losses in our electrical equipements. how can we protect our electrical machines and equipements in this situation.

1 Answers  

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what is meant by skew width in machines?

0 Answers  

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what is wave trap? please explain the working and principle

4 Answers  

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what is the difference between 230v and 115v?

1 Answers   Bhushan Power Steel,

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ther is any difference if we use 240 V A.C,50 Hz,1 Ph. in place of 230 V A.C,50 Hz,1 Ph.

4 Answers  

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I am EEE student i want to improve my core side skills.how cn i approach it?

0 Answers   Suzlon,

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Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

0 Answers   KSEB, L&T, Siemens,

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what composit error,ratio error,phase error in CT and PT??

4 Answers  

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Why indicate only 440V to 3-phase supply.

4 Answers  

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why induction motor take more current when motor start time and this current take for 1 hours when motor is start.

2 Answers  

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