what causes contact chatter when there is no demand on the air conditioning unit?

0 Answers  

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what is meant by distance protection ? how distance protection relay function ?

1 Answers   ABB,

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what is tha online tapping and offline tappchange? which side connected primary or secondary and explain ?

4 Answers   Essar,

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We have 420volts, Diesel gen-sets each 750kva 4nos. we are operating with bus bar duct having 10x150mm for each face 4nos. our question is what is the minimum gap required between each face? is there any satutory regulations?

1 Answers   Alliance One,

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block diagram of 2 ups system connected in hot stand by mode?

0 Answers  

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who & how the notations given as RYB to 3phase power supply.

1 Answers  

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what is dc transformer? how it work?

15 Answers  

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How does one convert an AC motor into a generator?

6 Answers   Bhel, ZK,

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Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

0 Answers   OPS,

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What is YNyn Transformer? and what are the other types in this?

3 Answers  

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what is the difference in between short time and continuous rating?

1 Answers  

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how to calculate the phase diffrence beetween given two equetion  y= 15sin(wt+pi/3) and y=10sin(wt-pi/4)

1 Answers  

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