what is different between IP55,IP54 and IP66?

2 Answers   ABB, Global Industries,

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What do you mean by reach and reach the point of the relay?

0 Answers  

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what is the main purpose of line PT and bus PT?

11 Answers   L&T,

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what is the meaning of 0.5ohm Resistance

0 Answers   Vardhman,

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Classify driling machines.

0 Answers   Essar,

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why are laminations used in constructing the field core?

3 Answers  

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The inventer is a battery, but if lost current at home u will turn on the fan but the is AC and inventer battery is dc . Then how the fan was rotating. What device Or machine in fan converst the Dc power to Ac power

0 Answers  

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132 KV TRFO BUSHING CT BURNT WHEN A 6.6KV HAS BEEN APPLIED TO IT .WHY .ANY REASON ?

3 Answers   vguard,

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Dear All kindly let me know that I know about the DG Rating for Example 150 KVA,Now how i will know that how much Ampher load it can offoard.

2 Answers  

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defined power system?

3 Answers   Spanco,

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Explain cos(theta) and Sin(theta)

0 Answers  

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why humming sound occured in HT transmission lines.

9 Answers   GE,

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