Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?
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"
Is This Answer Correct ? | 0 Yes | 1 No |
what types of cable used in underground coal mining?
explain comutator action in detail.thanks
1,Building containing 25 flats how much Amp 3 pole MCCB are required? 2, For the safey of each flat how many Amp RCCB can install -loaded with A/C
what is the working principle of electrical motors?
What are options used for earthing the switchgear.
why the under of transformer platform is filled with rock stones.
10 Answers TNEB Tamil Nadu Electricity Board,
How we can determine short circuiting current any plant and for example a plant which power generation is 415 volts and plant load is 500 kw.
what is the defination of 'Mass' & 'Weight'
what is the difference between grounding and earthing......how can we differentiate each other.....
What is the use of IGBT in UPS & its working??????????
tell 2 reasons for why only copper is used in domestic wires& only alluminium in transmission lines ?
Whis machine is having higher efficiency Transformer or Generator