What is IPXX?

2 Answers  

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Why distribution transformer secondary voltage is 0.433kV instead of 0.415kV.all other switchgear rating are 415 volt??

3 Answers  

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how can we check the earth resistance

3 Answers  

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What are the uses of lead compensator?

0 Answers  

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what is the relevance of knee point voltage in protection and metering grade CT ? and basically what is knee point voltage ?

2 Answers  

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what happens to the supply voltage if there is any change in frequency?

1 Answers   Gridco,

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If two hack saw blades, seperated by 1mm thick paper,are connected across 230volts, and immersed in water,then they start getting heat. This is fact,i dont know how they get heated.Blades are not directly connected together. Please if anybody knows the fact ,revert back to me

3 Answers  

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How to calcute the cable size for both HT and LT please specify the formula for that Regards Chethan C

1 Answers   Bhel, Student,

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what is the means of dedicate earthing?

2 Answers  

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What causal system?

1 Answers   NTPC,

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why overload relay is not tripped at time of starting of motor allthough staring current is too high?

5 Answers   TATA,

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What is the role of feedback in a closed loop control system?

0 Answers   GE,

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