What is the recommended voltage gap between Live and Earth and ,Earth and Neutral.If these are exceded what is the solution.

2 Answers  

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what objective books are good for preparing for PSU's?

3 Answers   NTPC,

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Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

0 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 the function of gss in the dg set.

0 Answers   Cushman Wakefield,

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What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.

0 Answers  

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could mail me the question papers for the test.

1 Answers   ONGC,

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Draw a SLD of HT distribution EB grid up to users Transformer?

0 Answers   HSL, VVL,

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What is rated value? is it phase values or line values?

1 Answers  

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How open delta used for protection?

4 Answers  

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what is S.T?specify the range?

2 Answers  

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what is necessity of using isolation transformer?

4 Answers   NTPC,

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