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what is relay what is protection & contact multiplying relays where it is used function in brief
1235What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?
1041for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
1231If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.
1118If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021
1219Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.
1034a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn
1612Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com
1090Post New Electrical Engineering Questions
what is a synchronizing lamp ?
How can we calculate the motor frame sizes?
where we use the SFU & FSU?
How phase to phase voltage comes 440V.
What is the distance between each insulator in 33kv transformer and how can it calculate
1 Ton is equal to how many watts?
How much depth n width required for laying of 1X70 Sqmm Cable in Desert???
What do you mean by transformation ratio of instrument transformer?
our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.
I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?
WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?
What are all present producing cost of Per KWH of various Fuel?
How does a digital electronic meter work??????
. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?
define superposition theorem thevnin theorem ,norton theorom?
