What is the min.& max distance between two earth spikes is
required for measuring earth resistance of an earth pit? Is
the manufacturer of Earth tester decides this? Pls explain.
Answer Posted / prem devkota
the minimum and maximum distances are 5 and 10 meter in
practice. But in general manufacturer declares the distance
requirement.
| Is This Answer Correct ? | 14 Yes | 1 No |
Post New Answer View All Answers
why lightning arrestor are made in two stack of insulator but why not cvt
why the carbon brushes are broken in srim while the motor runningtime
Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?
What is electrical grounding?
There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.
What is the transfer function?
What is knee point voltage of transformer?
how does it help for selection of a transformer.
what type questions asked in hp cl
what are the analog quality input for protection function?what are minimum reqiments?
What is the difference between a verilog task and verilog function?
what are the interview question asked in wind mill about electrical
following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?
how to calculate voltage drop and followed by cable calculation?is there avail in formula?
Why arc quenching is used in Diode ?