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if 6 earth pit value is 1.5 ohm then what should be the number of earth pit to make the value .8 ohm
2251In Indian Railways , how the AC motor is driven? Please explain clearly starting from the overhead 25kV supply.
1 4102In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.
2031In a 132KV Grid Station where voltage level is 132KV, here, why the rating of Surge arrests installed 120KV ?
1 4745what is the best way to start a 15 KW motor for pump star-delta or direct on line ? and from how many KW i must use direct on line ?
1 3583What's mean HVF & HAF in Vacuum Circuit Breaker?
Gandhi Institute of Technology and Management (GITAM), Hyundai, Jayam Engineering Works,
5349we want to feed 3 phase supply to 70 ton AC load.what will be the size of (3 phase)cable require.
BSES,
2 6231Post New Electrical Engineering Questions
PLS SEND THE RRB CHENNAI MODEL QUESTION PAPER my email id is ganesan98655@rediffmail.com
Any one can explaination about calibration with rotating sub standards?
if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit
How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.
What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.
Iin ESP why positive is grounded ? why not negative ?
What are the raitings of Mcb,mccb and Acb in detail ??
why we cannot protect 100% winding of an alternator by using differential protection?
How can I calculate per unit (KWH) fuel (Gas/ Diesel both) consumption 1MW unit?
what is cogging and crawling
what ispositive, negative, zero sequence impedence?
what is the use of sdf?
How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?
two way ckt diagram can be drawn by how many ways? give diagram
i am trying to PSUs/govermeant jobs since last 2 years but still i m not success, plz help me.
