WHAT IS DIFFERENCE BETWEEN idmt and instentanous relay? is idmt is used as back up protection or else?or when instantenous relay saturates IDMT will operate???

1 Answers   BK, REL,

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in the farm,water tank of 8000 litter capacity situated in 12 meter above.Farm owner want to lift 7000 litter of water within 7 minute to water tank of 12 meter above.which motor having HP rating is suitable for pumping??

1 Answers   ABB, Anchor, Havells, Keltron, KSEB, L&T, vguard,

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Why we use modulus with voltage in stability equation that is P=[E][V]SIN@/X WHY VOLTAGE IS IN MODE VALUE WHAT IS THE REASON?

1 Answers   Bhel,

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What should be distance required in between two phase of HT cionductors in open area??????

3 Answers  

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Which of the following plant has less plant factor ? -Nuclear -Hydro -Diesel -Pumped storage

1 Answers  

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what is the function of fire alarm system?

5 Answers  

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How can we calculate the motor frame sizes?

0 Answers   Essar,

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what is the difference between 2phase & 3 phase?

1 Answers   NTPC,

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What different between kw and kva. why maser AC in kva.

3 Answers  

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what is the different betweem earthing and neutral?

8 Answers  

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What is type of transformers?

3 Answers  

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who invented electricity?

20 Answers   L&T,

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