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while buying 30 kva on line ups for 1 phase ouput, we ave to calculate the number of batteries for 2 hours back up? how to calculate the ah rating and number of batteries
1 4032What is Surge Capacitor? Why it is require in Generator Circuit Breaker,inspite of surge arrester?
3132in our all power plant have connected in grid and grid voltage and plant voltage is same, but as per as electrical concept the power will transmit from high potential to low potential but here altough same,then how power transmit from power plant to grid.
2338which one is more costly:single phase induction motor or 3 phase induction motor??give proper reasons..
1 3584Due to ferranti effect which power increases at the receiving end?active power or reactive power?
5 9366i have dry type transformers can you help me that how many tests i can do to know the performence of transformer and also please tell me about the BDV test and Insulation resistance test in oil cooled transformers
4 9122Why 3 over-current and 1 earth fault relay is used on primary side of transformer? Why 2 over-current and 1 earth fault relay in used on secondary side of transformer?
1 8701hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.
2723Post New Electrical Engineering Questions
what is Anti-pumping?
design of IGBT firing circuit for 11KV
234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,
Explain the working principle of Synchronous Generator and Assynchronous generator?
What is the test block protection relay if any body know plz explained
critically criticize the application of ring main unit in power system
in dc series motor if field wdg is shorted then
we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?
in Telecom DC system-why positive +ve is made earthed.and - ve is fed to load.
how to increase senstivity of ct
how to find three phase complex power in per unit and MVA?
being an electrical engineer why you wanna come into software i have an very good academics what answer i have to give
How to run a three phase motor into single phase........
What does the kvar means?
HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?
