Why double earthing is required ?

1 Answers  

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how to calculate short ckt current of trafo. ex.3-ph 3MVA trfo. 11/440, impdence voltage=7.25%

1 Answers  

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what is the difference between c power and U power acb breaker

0 Answers   Radisson Blu,

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WHAT IS THE REASON FOR THE GROUND PIN IS BIGGER IN SIZE COMPARING TO OTHER PINS?

13 Answers  

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What is PQA???Applications........

0 Answers   Emerson,

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what is electric traction?

26 Answers   TCS, Volvo,

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Simple explanation of kirchoff's law

2 Answers  

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Pls explain about vfd control?Where it is used, Give some example?

3 Answers   Siemens,

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how can i get an electrical c-certificate?

0 Answers   Wartsila,

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what is the voltage between nutral and earth?

2 Answers  

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . please reply..............

9 Answers   NTPC,

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WHAT IS MEANT BY EMBEDED SYSTEM?CAN WE CALL PLC AS EMBEDED SYSTEM?

2 Answers  

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