Answer / er. ankush miglani 9718151073

IF WE CONNECT THE +VE POLARITY TO THE EARTH AND -VE TO THE
EQUIPMENT THE VOLTGE IS CALLED -VE DC VOLTAGE.
THE POSITIVE POLARITY ACQUIERS THE CORROSION VERY QUICKLY
AND TO MAINTAIN THE VOTAGE OF THE DEVICE UNDER
SPECIFICATIONS IT IS DONE.

Answer / sadat khan

we use -48voltd.c instead 0f +48voltd.c because all
problems like fluctuvation,surges all occur in possitive
wire not in negative wire.

what is meant by phase &line voltage, how its differ from each other ?

5 Answers  

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Which ciass CT can be use in diff. protection. Can be use 5p20?

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What will happen if the generator turns in a wrong direction?

2 Answers  

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give me applications of sequence bridges . (used in 3 phase un balanced systems)

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1 Answers  

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how can we calculate air compressure capacity

1 Answers  

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How PSV sizing being done

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HOW BETTER VOLTAGE REGULATION IS OBTAINED BY HIGH VOLTAGE TRANSMISSION....?

1 Answers   Cummins,

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List out the different frequency domain specifications?

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What is Anemometer used to measure?

0 Answers   Blue Star,

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Can anyone please provide me details of MCCB/Contactor/SFU rating calculations for a motor feeder..for example 50 kw.. not from type-2 cordination chart. i want manual calculations..

0 Answers  

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Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me

0 Answers  

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