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1.what is surge used in power system 2.what is switching used in power system 3.what is lightning used in power system
1 3864In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]
1950hi friends if you have any 400KV Substation Erection and installations Drgs please send to me.My email id:kandi.suresh441@gmail.com
2878if 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
1833if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer
1 3591what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator
2001there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit
1893how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc
1802What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning
1954What is ignition module of a CAT Gas Genset G-3508 Engine, Alternator SR4B Series. HOw its checked for correct functioning.Is it repiarable or replacable?
2136Post New Electrical Engineering Questions
how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)
What is Annunciation?
What is the differance between 2 dc motors of armature voltage 660 v and 440 v?
What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?
how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?
WHY THE DIMENSION OF TWO SAME RATED MACHINE IS DIFFERENT ?
what is earthing transformer? draw the winding dia.of earthing transformer.
sir am giving jspl exam on 19th oct . i belong to eee, so plz send previous question papers ..........to dis id abhilash203@gmail.com
What are the raitings of Mcb,mccb and Acb in detail ??
What is the purpose of using busbar mounting fuse?
electromechanical relay type identification example : type=tjmh t-stants for j- m- h-
can i connect wavetrap in 2 different phase in EHV line?
i have 500 amp inductive load of motors ,,,pleas tell me how can i calculate for capacitor bank for improving my power factor to 99 .....calcullations for capacitor bank,,,,
True or false question. 1.The fuse provide phase and neutral 2.power loss in electrical circuit can take place in (resistance or inductance or capacitance). 3.two phase system each phase has separated by a phase difference of (90 or 180 or 270 or 45). 4.3 phase balanced star connected load neutral current shall be (line current or phase current or zero or unity)
what happens to the supply voltage if there is any change in frequency?
