why DC source is used to idetify the polarity of CT/PT?

1 Answers  

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what is relation between HP & BHP

3 Answers   Usha Martin,

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What is slope...? Explain slope 1 and slope 2...?

0 Answers  

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why table fans rotate clockwise .while ceiling in anti clockwise?

4 Answers  

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why we still use sinusoidal waveforms for transmission and utilisation (we know generation is sinusoidal), instead of other ac waveforms such as triangle, sawtooth, square etc.,? is there any mathematical derivations to prove sinusoidal is efficient than others?

1 Answers  

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what is the current generated in a 230v megger?

2 Answers  

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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 is OLTC and difference between RTCC and OLTC

7 Answers   Sodexo,

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What is the difference b/w earthing & grounding?

6 Answers  

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explain the mode of metal iranafer in Co,welding

0 Answers  

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What is working Priniciple of TVSS ????

1 Answers   Emerson,

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IN A MAGNETIC MATERIAL HYSTERYSIS LOSS CAN'T BE REDUCED TO ZERO. HY?

3 Answers  

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