What is WLD System????

3 Answers   Emerson, HCL, Honeywell, Tata Communications,

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I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

2 Answers  

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what is reactive power is it good or bad for a system

5 Answers  

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what will be the effect if we increase the excitation of a alternator??

3 Answers  

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What are the minimum acceptable insulation resistances of insulation of underground cable suitable for 0.440kV,11kV, 33kV and 66kV?

2 Answers  

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Hello friends., my question is related to testing of current transformer... A Ct having knee point voltage of 750 volts., and I have two step up transformer's of rating 230 v to 440 volts., can I obtain the value of 750 volts by using the two transformer's.... If yes then how could I connect the transformer's to obtain knee point voltage?? thank you in advance

1 Answers   ABB,

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when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....

0 Answers  

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Why in Digital Megger for finding Insulation resistance,-ve is applied to core or conductor and +ve is applied to ground.

1 Answers   ACC,

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i want to apper for apgenco or aptransco or related can any one sugest me where can i get previous papers of thouse exams

0 Answers  

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Whats difference between a single phase & a three phase motor?

4 Answers  

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What is the difference between ARC & SPARK?

4 Answers   OPTCL,

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Why the brushes used in dc machines are made of carbon not from other metal?

2 Answers  

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