Answer / manohar

The resistivity of Earth is 100 ohm-m compare this with
resistivity of copper which is 1.7 x 10-8 ohm-.m (
0.017ohm-mm2-m) & that of GI is 1 x 10-7 (0.1ohm
-mm/m),definitely neutral earth is more resistive than
copper or GI.eVEN INDIAN STANDARD recognasises this fact.It
mention in the clause 0.3 that the "the earth now rarely
serves as part of the return circuit, but is being used
mainly for fixing the voltage of the system neutrals"

what is the difference b/w neutral and ground?

4 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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power transmission pole used one support , that only for support or earthing

0 Answers  

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can u name the different types of motors used in different types of applications?

6 Answers   ABB, Bhel, SBQ,

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What is the difference in calculating size of AC cables compared to calculating size of DC Cables? Usually DC Cables are larger than AC Cables although they have the same ampacity. Why is it?

0 Answers  

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what is skin effect and why is it absent in DC systems

4 Answers  

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can u guys pls suggest a good material for learning abt switch yard and its components

2 Answers  

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how can we calculate the reactence of the current transformers?

0 Answers  

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why transformers are sometimes kept on concrete benches..?

2 Answers  

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what will happen when excitation of a synchronous machine is suddenly reduce to zero when it is running at full load..??

7 Answers  

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WITCH CARDS IN USE IN FIRE CONTROL PANEL.

0 Answers  

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what is cogging? how it can be controlled?

1 Answers   HCL,

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