Interested to Buy Any Domain ? << Click Here >> for more details...
why insulation cost is more in underground cable than in
overhead line?
- 2 Answers
- 3403 Views
- I also Faced
- E-Mail Answers
Answer Posted / biren
In overhead line there is air around the bare conductor which is a insulation layer but the earth around the under ground cable is a good conductor. so there is more chance of insulation failure, hence to avoid the normal insulation failure more insulation is provided which increases the cost.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
one conductor length is L.and i am strech uniformly this conductor and made length is 2L.so resistance of this strech conductor is R=4R..but i want to know about area of stech conductor hows it become a/2..
where solid grounding and where grounding through ngr done and why?
how to wiring it with contactor and timer together
In synchronous motor, how the field current is related to armature current..i know its inversely proportional..but concept wise...i was nt clear....pls help me...
how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment
If Polarization index of motor 8.75 at 500volts of medium voltage 4.16 KV motor what this mean winding good or bad pl answer if any reffrence book give me the link
CALCULATE THE TOTAL VOLTAGE DROP AND SELECT THE CABLE SIZE IN MM-SQARE FOR A PANEL-262KW AT 110 METER FROM THE SOURCE SUPPLY , SUPPLY VOLTAGE 240/415
how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw
how to revers the direction of single phase motor
what is active power & reactive power?
In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?
What do you mean by lighting transformer?
Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.
What are the three major categories of error?
Difference between ac parallel circuit and ac series circuit?
